Angiotensin-converting enzyme (ACE) inhibitors and other vasodilators are used in the early treatment of heart failure. They act to
a. cause loss of volume
b. increase arterial pressure and perfusion
c. cause pooling of the blood and decreased venous return to the heart
d. increase the release of aldosterone and improve fluid balance

Answers

Answer 1

Answer:

Option c. cause pooling of the blood and decreased venous return to the heart

Explanation:

The ACE inhibitors increases the diameter of the blood vessels (vasodilation) that improves the flow of blood. This reduces the work load on the heart. At the time of heart failure, a substance called angiotensin is released. This angiotensin formation is blocked by the ACE inhibitors. Angiotensin is involved in narrowing the blood vessels.

The ACE cause pooling of the blood and decreased venous return to the heart. The ACE inhibitors causes vasodilation that allows decrease in blood pressure. So, there is no increase in arterial pressure, aldosterone and loss of volume. Thus, option C is correct.


Related Questions

smallest solid components of blood that are composed of fragments of megakaryocytes
A. erthrocytesB. leukocytesC. plasmasD. thrombocytes

Answers

Answer:

D - Thrombocytes

Explanation:

Thrombocytes are the smallest cells in the blood with a diameter of 2-4μm. They do not have a nucleus and are incapable of mitosis.

They are also known as blood platelets.

Their function is to prevent and control bleeding by clotting blood which they achieve by clumping on the surface of the blood vessel after detecting an injury to it. They also contribute substances necessary for normal coagulation of blood.

Thrombocytes are produced from very large bone marrow cells called megakaryocytes and are thus comprised of its fragments.

According to blood pressure measurements, _____ represents the pressure within the arterial system after the heart contracts.
A. distal
B. systolic
C. medial
D. diastolic

Answers

B. Systolic is when the heart beats. Diastolic is the heart at rest.

Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) can be derived in limited quantities from?

Answers

Answer:

Alpha linolenic acid (ALA)

Explanation:

Alpha linolenic acid (ALA) is an essential fatty acids(derived mainly from diet). It's converted to Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in the Liver. The conversion of EPA and DHA from ALA can be derived in limited quantities I.e at a production rare of less the 15%. Hence, the need for it to be obtained in diet due to its lower rate of production from ALA.

A small, potentially living object was found. For this object to be considered alive, the object must________.

Answers

Answer:

For the object of to be considered alive , it must have DNA and all the characteristics of living things.

Explanation:

If one is to determine whether the object is alive or not the object should possess all the properties of living things. firstly, it should have the genetic material the DNA without which the cell can't be alive or the nucleus in case of PROKARYOTES. it should have the ability to reproduce, move , to grow and to excrete without which it would not be considered alive.

For an object to be considered alive, it must respond to its environment, grow, reproduce, maintain homeostasis, have complex chemistry, consist of cells, and need energy for life processes.

To be classified as a living thing, most scientists agree that an object must exhibit certain characteristics. Among these characteristics, a living organism must: respond to the environment, grow and develop, reproduce, maintain homeostasis, have complex chemistry, and be composed of one or more cells. Additionally, all living organisms require energy to carry out life processes.

For example, a car may move, but it does not grow, reproduce, or maintain homeostasis, making it clearly non-living. Similarly, while a crystal can grow in size, it does not meet the other criteria for life. It’s also important to consider the aspect of self-sustaining biological processes and intentional agency, which are also indicative of life. This helps in distinguishing between living organisms and non-living objects or even parts of organisms, which, though they may exhibit some characteristics of life, are not living entities by themselves.

Why is it difficult for scientists to find fossils from the Precambrian period?
A)There are no rocks left on Earth that exist from this period.
B)Life did not exist during this period.
C)The life that existed had soft bodies, which rarely left behind fossils.
D)Scientists cannot date rocks before the Precambrian period.

Answers

Answer:

The life that existed had soft bodies, which rarely left behind fossils.

Explanation:

Fossils are formed when the organisms are pressed between layers of rocks. If the organisms are too soft, they will leave only a faint imprint in rocks. The organisms present in the Precambrian period were soft. So fossils of these organisms are difficult to find.

Answer: (C) The life that existed had soft bodies, which rarely left behind fossils.

Explanation: Fossils are formed when the organisms are pressed between layers of rocks. If the organisms are too soft, they will leave only a faint imprint on rocks. The organisms present in the Precambrian period were soft. So, fossils of these organisms are difficult to find.

Explain the precautions for immunizing children with Bruton's agammaglobulinemia.

Answers

Answer:

Avoid using killed vaccine for administration.

Explanation:

Bruton's agammaglobulinemia may be defined as the X linked disorder that affects the immune system of an individual. This disease is mainly caused by the mutation in the gene responsible for coding the  Bruton tyrosine kinase.

The children suffering from this disease require special immunization and some precaution must be followed before immunizing them. These patients are not allowed to immunizes with the live vaccines as these vaccines can evoke the immune response strongly and child may get infected by the disease. The individual should not given immunosuppressive drugs or corticosteroids.

Thus, the answer is avoid using killed vaccine for administration.

Red-cheeked salamanders are partially protected from predators because of cardiac glycosides they produce from glands on their back. When ingested, cardiac glycosides disrupt normal heart rhythms. A different salamander species, the imitator salamander, also has red cheek patches, but does not produce cardiac glycosides. It does gain protection from predators that have learned to avoid red-cheeked salamanders. How does this relationship affect the population dynamics of both species?
A) The red cheeked salamander is positively affected, the imitator is negatively affected.
B) The red cheeked salamander is negatively affected, the imitator is positively affected.
C) Both species are negatively affected.
D) Both species are positively affected.

Answers

Answer:

B) The red cheeked salamander is negatively affected, the imitator is positively affected.

please please help! I'm really behind.
If the amount of oil that spilled into the gulf coast had been processed oil, would that have been better or worse for the environment? Explain your answer.

Answers

Answer:

If the oil spilled in the gulf would have been processed oil, it would be worse than a normal oil spill as these oils have a higher shelf life.

Explanation:

Oil spills happen when a large quantity of oil gets mixed with large water bodies like sea and oceans. The oil being denser than water floats on the surface and does not mix with the water. It forms a coating on top of the water.

The difference between processed oil and normal oil is that they are heated at very high temperatures and this results in oxidation which creates free radicals, which are not good for the body and its cells. Also they have a very long shelf life due to which they will remain on water for a long time.

When oil spills happen, the wind cause the spill to spread over the water surface, thereby engulfing a large amount of area. The major disadvantages of the spill are:-

The oil gets stuck in the feathers of the birds who come by to dip themselves,Animals like whale, dolphins have blow holes for releasing water. the oil covers these holes and makes it difficult for them to breathe.The fur of animals like seal and otter gets mixed with the oil and can prove harmful to them as it gets them exposed to cold.The overall BOD of the water body decreases, and organisms which use sun rays coming inside the ocean suffer as these get blocked.Since processed oil has longer shelf life, a large quantity of animals will suffer and die.

Processed oil, with its toxic additives and higher volatility, would likely cause more harm to marine life and ecosystems compared to crude oil.

If the oil spilled into the Gulf Coast had been processed oil, the environmental impact would likely have been worse. Here's why:

1. **Chemical Composition**: Processed oil, such as refined petroleum products (e.g., gasoline, diesel, jet fuel), contains a higher concentration of toxic additives and chemicals compared to crude oil. These additives, designed to enhance performance, include harmful substances like benzene, toluene, and xylene, which are more toxic to marine life and ecosystems.

2. **Volatility**: Processed oils are generally more volatile, meaning they evaporate more quickly and release harmful vapors into the atmosphere. This can lead to increased air pollution and pose health risks to both humans and wildlife through inhalation of toxic fumes.

3. **Bioavailability and Toxicity**: The refined hydrocarbons in processed oil are more readily absorbed by organisms. This can result in higher toxicity levels in marine species, leading to increased mortality and long-term ecological damage.

4. **Spill Behavior and Cleanup**: Processed oils can spread more rapidly on the water surface, complicating containment and cleanup efforts. Their higher viscosity can also make mechanical recovery methods less effective, prolonging exposure and damage to marine and coastal environments.

In contrast, crude oil, while still harmful, tends to break down more naturally over time due to its complex mix of hydrocarbons and can be somewhat less immediately toxic to marine life. Thus, a spill of processed oil would likely result in more severe environmental consequences than a crude oil spill.

What is likely to be true of a population with an age structure that is pyramid shaped?

Answers

Answer:

It is as potential for the rapid growth in the future.

Explanation:

The age pyramid structure or population pyramid may be defined as the graphical distribution of the different age group of the population. Different age groups are pre-reproductive, reproductive and post reproductive.

Different age pyramids are expanding population ( pyramid shape) decline population ( urn shape) and stable population. The age group of the pyramid population determines the potential or the ability of the rapid growth of the country in the future.

Develop Models Draw a model to show how the process of photosynthesis impacts both the flow of energy and the cycling of carbon through the atmosphere and biosphere.

Answers

Through the use of the atmosphere and the biosphere, photosynthesis is a crucial component of the carbon and energy cycles.

Why photosynthesis is called process?

Phototrophs transform sunlight into chemical energy through a process called photosynthesis, which is then utilized to power cellular processes. In the form of carbohydrates, which are made from water and carbon dioxide the chemical energy is kept in reserve.

What makes photosynthesis so important?

The main purpose of photosynthesis is to transform sunlight into chemical energy, which is then stored for later use. This process primarily produces power to the planet's life systems. By the norms of human technology, it is not particularly effective, but it gets the job done.

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A similar protein is found in both a bacterial cell and a single-celled eukaryote. However, the prokaryote seems to produce a much higher amount of the protein. A detailed investigation of the control mechanisms of this protein in both organisms would include a comparison of what?

Answers

A detailed investigation of the control mechanisms of this protein in both organisms would include a comparison of  mechanism of transcriptional control.  

Explanation:

Transcription is the process of production of m-RNA's from the DNA. This is the process of initiation of protein production. This process is seen in both prokaryotic and Eukaryotic organisms, but prokaryotic organisms produce much more protein than the Eukaryotic organisms. This is because of the secretory processes involved in the bacteria.  

But in Eukaryotic organisms, there are several regulatory mechanisms which control the transcription. So the protein production is also less. Thus, studying the transcription, we can control the protein production.  

A nursing student is listing the different levels of the health care services pyramid. Under which type of health care services should the nursing student include subacute care?
1. Tertiary care2. Continuing care3. Restorative care4. Secondary acute care

Answers

Answer:

1. Tertiary Care

Explanation:

Tertiary care is a specialized health care for inpatients over an extended period of time usually on referral by primary or secondary health care personnel, involving contemporary and complex procedures and treatments.

Examples include: Cancer management, complex medical and surgical procedures.

Subacute Care is defined as an inpatient care for someone who has an acute illness. It is treatment administered immediately after acute hospitalization or in some cases, in place of it to treat and provide care for people with medically complex conditions.

Subacute care is a type of tertiary care. Option a is the correct answer.

Tertiary care is the most specialized level of health care. It is provided in hospitals and other specialized facilities. Tertiary care includes a wide range of services, including:

Complex surgery

Intensive care

Organ transplantation

Cancer treatment

Rare disease treatment

Rehabilitation

Subacute care is a type of rehabilitation that is provided to patients who are recovering from a serious illness or injury. Subacute care is typically provided in a skilled nursing facility or a rehabilitation hospital. Subacute care patients may need help with activities of daily living, such as bathing, dressing, and eating. They may also need physical therapy, occupational therapy, or speech therapy.

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What modern organism did pterosaurs have a similar ecological role to and why?

Answers

Answer:

Birds.

Explanation:

Pterosaurs are nothing but extinct clade flying reptiles of the order Pterosauria . For most of the Mesozoic, they existed: that is  from those in the late Triassic to the end of the Cretaceous. Pterosaurs are the first vertebrate to have evolved powered flight.

Birds, are the modern organism analogous to the pterosaurs as Birds can  fly and hunt insects and fish out of the ocean.

"The use of weed killers has removed a limiting factor to the size of populations of crop plants."

Answers

Answer:

True

Explanation:

Question -

"The use of weed killers has removed a limiting factor to the size of populations of crop plants."

True

Solution -

Weeds are basically unwanted plant species that grow in between the main crop thereby hindering the potential growth of main crops. As the time required by the main crop plant to mature is larger than the time required by the weed plants. Hence, with in a short span of time weed plants multiply thereby consuming essential mineral and nutrients from soil and fertilizers. They also cover the physical area thereby restricting the expansion and development of main crops. Application of weed killer will kill the weeds and remove the limitation hindering the growth of main plant/crop

Two parallel electrodes that are typically separated by 3cm with a 5V potential difference across them.

What is the magnitude of the electric field between the two electrodes in ionization type detectors?

Answers

Answer:

166.7 V/m or 166.7 J/C

Explanation:

The formula for electric field is

volts/distance

Given

volts = 5V

Distance =0.03m

= 5V / 0.03m

= 166.7 V/m

Recall

1 V/m = 1 J/C

The magnitude of the electric field between the two electrodes in ionization type detectors = 166.7 V/m or 166.7 J/C

Salmonella bacteria can cause humans to have stomach cramps, vomiting, diarrhea, and fever. The effect these bacteria have on humans indicates that Salmonella bacteria are:_________(1) predators(2) pathogenic organisms(3) parasitic fungi(4) decomposers

Answers

Answer:

2. Pathogenic organisms

Explanation:

Pathogenic organisms such as Salmonella bacteria are capable of causing sicknesses and diseases

Final answer:

Salmonella bacteria causing symptoms like stomach cramps and diarrhea are pathogenic organisms because they lead to illness in humans, known as salmonellosis.

Explanation:

The effect of Salmonella bacteria on humans includes symptoms like stomach cramps, vomiting, diarrhea, and fever. These symptoms indicate that Salmonella are pathogenic organisms, which means they are capable of causing illness or disease. Specifically, these bacteria are known for causing salmonellosis, a type of food poisoning, when they are ingested through contaminated food. Salmonella are not predators since they do not hunt for prey, they are not parasitic fungi as they are bacteria and do not live as parasites on fungi, and they are not decomposers since they do not break down dead organic material to obtain nutrients.

True or False. Sulfur-reducing bacteria can cause corrosion in neutral anoxic enclosed waste water tanks. Bacteria used to help break down fiber and cellulose in anaerobic environments are found in anaerobic reactors of tertiary wastewater treatment. Ammonia-oxidizing bacteria are found on the outside of granules used in AST. Phosphorus-accumulating organisms are used in mines in enhanced biological phosphorus removal. Chemolithotrophs are used in leaching through oxidation of materials in aquatic environments.

Answers

Answer:

1. FALSE

Sulfur-reducing bacteria can cause corrosion in neutral anoxic enclosed waste water tanks.

2. FALSE

Bacteria used to help break down fiber and cellulose in anaerobic environments are found in anaerobic reactors of tertiary wastewater treatment

3. TRUE

Ammonia-oxidizing bacteria are found on the outside of granules used in AST.

4 FALSE

Phosphorus-accumulating organisms are used in mines in enhanced biological phosphorus removal

5. FALSE

Chemolithotrophs are used in leaching through oxidation of materials in aquatic environments.

Explanation:

1. Sulfur-reducing bacteria can cause corrosion in neutral anoxic aquatic envrionements

2. Bacteria used to help break down fiber and cellulose in anaerobic environments are found in enclosed waste water tanks.

4. Phosphorus-accumulating organisms are used in anaerobic reactors of tertiary wastewater treatment in enhanced biological phosphorus removal.

5. Chemolithotrophs are used in leaching through oxidation of materials in mines.

Which of the following statements regarding absorption of monosaccharides is TRUE?

A. Not all monosaccharides are absorbed by active transport.
B. All monosaccharides require energy for absorption; therefore, they require active passport.
C. All monosaccharides are absorbed by passive transport.
D. Monosaccharides are simple sugars and require only direct absorption into the bloodstream.

Answers

Answer:

A. Not all monosaccharides are absorbed by active transport is the correct answer.

Explanation:

Monosaccharides are simple sugar. Glucose, galactose, and fructose are examples of monosaccharides.They are the building blocks of disaccharides and polysaccharides.Monosaccharides function is to produce energy.Not all monosaccharides are absorbed by active transport because monosaccharides(galactose, glucose) are transported in the epithelial cells through protein carrier by secondary active transport and Fructose passes and absorbed entirely by facilitated diffusion.

Final answer:

The true statement about monosaccharide absorption is that not all monosaccharides require active transport; some like fructose are absorbed by facilitated diffusion.

Explanation:

The statement regarding the absorption of monosaccharides that is TRUE is: Not all monosaccharides are absorbed by active transport. The process of monosaccharide absorption in the small intestine involves simple diffusion, active transport, and facilitated transport. Glucose and galactose are absorbed through active transport, co-transported with sodium ions. Meanwhile, fructose is absorbed by a different mechanism known as facilitated diffusion, which does not require energy. All monosaccharides do not necessitate active transport, and since some are absorbed without using energy, it shows that not all absorption processes require ATP.

A small complex organic molecule, often derived from vitamins, that acts in conjunction with an enzyme with an enzyme is known as a(n):

Answers

Answer: Coenzymes

Explanation:

Coenzymes are the small organic molecules that are often derived from the vitamins. It can be tightly or loosely bond to the enzymes.

Tighly bond ones are the prothestic groups and loosely bond ones are coenzymes like the products and substrate which binds to the enzyme and get released from it.

This component is very important for any reaction to take place. It bonds to the enzymes and helps in product formation.

A coenzyme is a crucial small organic molecule, often derived from vitamins, that enhances enzyme activity by participating in catalytic reactions. Coenzymes bind to enzymes, assisting in metabolic pathways and are essential for the proper functioning and regulation of enzymes. They underscore the importance of vitamins in the body's metabolic processes.

A small complex organic molecule, often derived from vitamins, that acts in conjunction with an enzyme is known as a coenzyme. Coenzymes are essential for the proper functioning of enzymes, enhancing their activity and allowing them to carry out their roles in various metabolic processes effectively. These molecules, which can either be vitamins themselves or derivatives of vitamins, bind to the enzyme's active site and participate in the catalytic reactions. While some coenzymes may bind permanently to the enzyme, others bind temporarily, assisting in the transfer of atoms or groups of atoms between molecules, thus playing a crucial role in the body's metabolic pathways.

Many of the water-soluble vitamins are used for the synthesis of coenzymes, which underscores the importance of vitamins in nutrition and metabolism. It's interesting to note that while some enzymes require inorganic ions as cofactors, coenzymes represent the organic molecules necessary for the enzyme's activity. Examples of such coenzymes include NAD+/NADH and Coenzyme A, which are vital in redox reactions and metabolic pathways like glycolysis and the tricarboxylic acid cycle, respectively.

Marissa blows up balloons for a party. She decides how big or small to make each balloon. Why does the air she blows into each balloon take up all the space inside the balloon?

A. The particles of air move around and slide past one another and take the shape of the balloon.
B. The particles of air have a strong attraction between each other and the balloon.
C. The particles of air move freely, colliding with each other and the sides of the balloon.
D. The particles of air move and increase in size when they have more space in the balloon.

Answers

Answer:

Option C, The particles of air move freely, colliding with each other and the sides of the balloon

Explanation:

The air molecules exert force on the inner surface of the balloon due to which the material of the balloon stretches and it increases in size. If air is blown in large extent, it will exert more force on the balloon material thereby extending it to a larger extent but when air is blown in a smaller amount, the size of the balloon increases by a smaller extent.  

Hence, option C is correct

Second-growth forests ________.a) are those forests in the National Parks that are protected from logging b) are forests that establish themselves after virgin timber has been removed from an area c) are less abundant on Earth today than they were 500 years ago d) in North America are mostly in British Columbia and Alaska e) are forests whose timber has second-rate value.

Answers

Answer:

Second-growth forests are forests that establish themselves after virgin timber has been removed from an area

Answer b) is the ANSWER

Explanation:

It's also known as secondary forest.

It occurs after a long time in a forest or woodland area where the disturbance factors have been removed over a long period of time. thereby, causing the regrowth of trees

A non-critical surface that does not penetrate tissue, but requires the use of barriers to prevent cross-contamination, includes the:

Answers

Answer:Film placement instruments.

Explanation:

What is the name of the point where the two parietals articulate with the occipital bone?

Answers

Answer:

Lambdoid suture

Explanation:

The parietal bones are two bones, located above the temporal, behind the frontal and in front of the occipital. The occipital is an odd bone of the skull, with important cranial joints and sutures. The lambdoid suture extends through the back of the head. Each parietal bone joins the occipital bone in the lambdoid suture, that is, the lambdoid suture is the joint in the back of the skull that connects the parietal bones with the occipital bone.

Ethylene is an organic compound produced by ripening fruits. In a controlled experiment, researchers found that ethylene gas stimulated the ripening process in newly harvested fruits. Which of the following describes the most likely connection between natural ethylene production and fruit ripening?
(A) As a result of metabolic inactivity, newly harvested fruits are unable to absorb ethylene gas from the atmosphere.(B) Ethylene gas is a chemical signal through which ripening fruits trigger the ripening process in other fruits.(C) Because of normal phenotypic variation, only some of the fruits in a given generation are expected to produce ethylene gas.(D) The rate of ethylene gas production by ripening fruits is an indicator of the relative age of an ecosystem.

Answers

Answer:

Option (B) Ethylene gas is a chemical signal through which ripening fruits trigger the ripening process in other fruits.

Explanation:

The ethylene hormone triggers the ripening process of fruit. However, in order to slow down the ripening process the action of ethylene is to be blocked. All fruits are capable to produce ethylene up to a certain level after which they start ripening. There are some classes of fruits that respond to the external ethylene such as apple, mango, tomato etc.  

Hence, option B is correct

The following describes the most likely connection between natural ethylene production and fruit ripening - (B) Ethylene gas is a chemical signal through which ripening fruits trigger the ripening process in other fruits.

Ethylene

A plant hormone or regulatory hormone found in form of a gaseous compound

Ethylene is a chemical signal through which ripening fruits trigger the ripening process in fruitsethylene signaling have shown a linear transduction pathway leading to the activation of ethylene response factors. Most fruits produce ethylene that starts the ripening process.Its level in under-ripe fruit is very low, but as the fruit develops, the production of ethylene becomes larger that speeds up the ripening process of fruit.

Thus, The following describes the most likely connection between natural ethylene production and fruit ripening - (B) Ethylene gas is a chemical signal through which ripening fruits trigger the ripening process in other fruits.

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Mucous secretions in the respiratory tract inhibit microbial infections. These secretions are produced by which of the following tissue types found in the lungs?

Answers

Answer:

The correct answer is - epithelial tissue.

Explanation:

Mucous secretions are are essential in the immune response as it inhibits the microbial infections such as the bacteria or trap the dust particles that are present in respiratory tract.

Respiratory tract have epithelial tissue that contains cilliated cells or occasionally goblet cells. These cells are secrete mucus that moistens the epithelial cell surface and traps or adhere to the particles or microbes.

Thus, the correct answer is - epithelial tissue.

Did the phylogenies of the different islands support the theory that one colonization followed by adaptive radiation and convergent evolution occurred?

A. Yes, each island had a different order of ecomorph evolution.

B. No, each island had the same phylogeny.

C. No, the Cuban and Puerto Rican phylogenies were the only two that were the same.

D. Yes, only the Jamaican phylogeny had a different order of ecomorph evolution.

Answers

Answer:

It depends on the graphics you have but:

Explanation:

The theory of one colonization and then radiation should see as only one group on your phylogeny, all branches come from a single point.

Now, convergent evolution means that in different islands the same morphologic pattern is seen BUT not come from the same ancestor. This means that the morphologic pattern was built under the island conditions and NOT as colonization from another island

If there is one colonization and then radiation all islands have to have their own phylogeny and same morphs on each phylogeny to be convergent.

Which of the following effects would you expect if red blood cells were shaped like neurons?

They would not be able to move as easily through capillaries.
They would more easily carry out gas exchange in the alveoli.
They would not need to be transported through the body.
They would become more effective at picking up urea discarded by body cells.

Answers

Answer:

They would not be able to move as easily through capillaries.

Explanation:

The red blood's shape allow them to deformate from a disk to a paraboloid when they travel across capillaries , a neuron's shape wouldn't allow this deformation and therefore blood cells with neuron shape wouldn't reach all places to exchange gases.

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What is the pattern of expression of β-galactosidase in laci— cells and why?

Answers

Answer:

I suggest the complete question is

What is the pattern of expression of β-galactosidase in lacI- cells and why?

A.constitutive expression, because there is norepressor

B. no expression, because the β-galactosidase gene is defective

C. constitutive expression, because the galactoside permease gene is defective

D. no expression, because lactose is absent

The CORRECT ANSWER for pattern of Expression is A

A.constitutive expression, because there is norepressor

Explanation:

LacI- cells have a defective repressor gene. This wil cause the lacZ gene to be expressed even in the absence of lactose.

(It's worthy to Note that when glucose is absent, lacZ is fully expressed)

Certain genes have apparently unusual inheritance patterns. For instance, in the mouse autosomal gene H19, only the copy inherited from the mouse's mother is expressed. Conversely, in the mouse autosomal gene Igf2, only the copy inherited from the mouse's father is expressed. The consequence of this is that imprinted genes are expressed as if they were present in only one copy, even though there are two copies of each of these genes in each cell. What process or processes are responsible for this phenomenon

Answers

Answer:

Epigenetic inheritance

Explanation:

Epigenetic inheritance are the processes by which heritable modifications in gene function occur but are not due to changes in the base sequence of the DNA of the organism. Examples are paramutation, X-chromosome inactivation, and parental imprinting.

This case is the example of parental imprinting which is an epigenetic phenomenon in which the activity of a gene is dependent on whether the gene was inherited from the father or the mother. Some genes are maternally imprinted, others paternally.

Which species of crocodile is the most aggressive and largest living reptile?

Answers

Answer:

Crocodylus porosus

Explanation:

Crocodylus porosus, colloquially known in Australia as the saltie, was much more aggressive than six other species of crocodiles selected from around the world.

Answer:

Crocodylus porosus

Explanation:

A study conducted by Charles Darwin University in the Northern Territory found that the Crocodylus porosus, colloquially known in Australia as the saltie, was much more aggressive than six other species of crocodiles selected from around the world.

Other Questions
In June 2005, a CBS News/NY Times poll asked a random sample of 1,111 U.S. adults the following question: "What do you think is the most important problem facing this country today?" Roughly 19% of those sampled answered "the war in Iraq" (while the rest answered economy/jobs, terrorism, healthcare, etc.). Exactly a year prior to this poll, in June of 2004, it was estimated that roughly 1 out of every 4 U.S. adults believed (at that time) that the war in Iraq was the most important problem facing the country. We would like to test whether the 2005 poll provides significant evidence that the proportion of U.S. adults who believe that the war in Iraq is the most important problem facing the U.S. has decreased since the prior poll. Which of the following are the appropriate hypotheses in this case?a. H0: p = .19 vs. Ha: p < .19b. H0: p = .19 vs. Ha: p > .19c. H0: p < .25 vs. Ha: p = .25d. H0: p = .25 vs. Ha: p < .25e. H0: p = .25 vs. Ha: p not equal to .25 The steps of the analytical problem-solving model include: identifying the problem, exploring and selecting alternatives, _____________, and evaluating the situation. When there is excess demand in the loanable funds market, which of the following will occur? A cube has a volume of 343 cubic cm. What is the area of the base In "A Christmas Memory," what does the following quote mean?''Friends. Not the necessarily neighbor friends: indeed the larger share is intended for persons we've met maybe once, perhaps not at all. People who have stuck our fancy. Like President Roosevelt.'' What active listening skills did the negative use while the affirmative presented? Check all thatlooking at the person who is speakingreviewing notes for the next part of the debatepaying close attention to the argumenttaking notes on what the other person is sayingasking questions about the claim Memories of a MemoryHave you ever witnessed something amazing, shocking or surprising and found when describing the event that your story seems to change the more you tell it? Have you ever experienced a time when you couldn't really describe something you saw in a way that others could understand? If so, you may understand why some experts think eyewitness testimony is unreliable as evidence in scientific inquiries and trials. New insights into human memory suggest human memories are really a mixture of many non-factual things.First, memory is vague. Imagine your room at home or a classroom you see every day. Most likely, you could describe the room very generally. You could name the color of the walls, the floors, the decorations. But the image you describe will never be as specific or detailed as if you were looking at the actual room. Memory tends to save a blurry image of what we have seen rather than specific details. So when a witness tries to identify someone, her brain may recall that the person was tall, but not be able to say how tall when faced with several tall people. There are lots of different kinds of "tall."Second, memory uses general knowledge to fill in gaps. Our brains reconstruct events and scenes when we remember something. To do this, our brains use other memories and other stories when there are gaps. For example, one day at a library you go to quite frequently, you witness an argument between a library patron and one of the librarians. Later, when telling a friend about the event, your brain may remember a familiar librarian behind the desk rather than the actual participant simply because it is recreating a familiar scene. In effect, your brain is combining memories to help you tell the story.Third, your memory changes over time. It also changes the more you retell the story. Documented cases have shown eyewitnesses adding detail to testimony that could not have been known at the time of the event. Research has also shown that the more a witness's account is told, the less accurate it is. You may have noticed this yourself. The next time you are retelling a story, notice what you add, or what your brain wants to add, to the account. You may also notice that you drop certain details from previous tellings of the story.With individual memories all jumbled up with each other, it is hard to believe we ever know anything to be true. Did you really break your mother's favorite vase when you were three? Was that really your father throwing rocks into the river with you when you were seven? The human brain may be quite remarkable indeed. When it comes to memory, however, we may want to start carrying video cameras if we want to record the true picture.Part A and Part B below contain one fill-in-the-blank to be used for all three question responses. Your complete response must be in the format A, B, C including the letter choice, commas, and a space after the commas.Part A:Which of the following best explains why memories from childhood are unreliable?Fill in blank 1 using A, B, or C.Our brains add details and general knowledge to childhood memories.Our brains are not as reliable as video cameras are.Our brains create new stories to make the past more interesting.Part BSelect one quotation from the text that supports your answer to Part A. Add your selection to blank 1 using E, F, or G.But the image you describe will never be as specific or detailed as if you were looking at the actual room.When a witness tries to identify someone, her brain may recall that the person was tall, but not be able to say how tall.To do this, our brains use other memories and other stories when there are gaps.Select one quotation from the text that supports your answer to Part A. Add your selection to blank 1 using H, I, or J.Documented cases have shown eyewitnesses adding detail to testimony that could not have been known at the time of the event.With individual memories all jumbled up with each other, it is hard to believe we ever know anything to be true.When it comes to memory, however, we may want to start carrying video cameras if we want to record the true picture The ratios used in evaluating a company's liquidity and short-term debt paying ability that complement each other are the Entry field with incorrect answer now contains modified data Accounts receivable turnover ratio and the Entry field with correct answer current ratio. If you strive to follow the Code of Ethics for Nurses as defined by the ANA _____.then you are interested in becoming a lobbyistthen you have at least one year of experience in nursingthen you are able to vote in ANA officer electionsthen you are placing the patient at the center of your professional responsibilities What is one effect that an in medias res opening is meant to have on thereader? After getting an unresponsive (unconscious or dazed) diver out of the water, I should keep checking for? A megachurch refers to a large, often evangelical or Protestant church that employs business practices, showmanship, rock music, and spectacle to attract congregations. Many megachurches televise their sermons, reaching audiences too far away to attend in person. These churches reveal how technology and marketing, as well as the larger force of ________ , are changing religion today. I recently saw an advertisement that said your company would give a 5% discount to anyone who enrolls in a payment plan. My monthly bill is $75. How much will i save if i enroll in the automatic payment plan The most common symptoms of foodborne illness include all the following EXCEPT:______A) diarrheaB) vomitingC) abdominal crampsD) double vision A Six Flags theme park charges $30 for adults and $15 for kids. How many adult tickets and kid tickets were sold, if a total of 1,644 tickets were sold for a total of $11,250? How is Scrooge able to fly? Explain Find each unit cost rounded to the nearest cent. Then determine the better buy.3 cans of corn for $1.68; 5 cans of corn for $2.45Answers: $5.04 per can; $12.25 per can; 3 cans for $1.68$5.04 per can; $12.25 per can; 5 cans for $2.45$.56 per can; $.49 per can; 3 cans for $1.68$.56 per can; $.49 per can; 5 cans for $2.45 Which of the following agencies is (are) incorrectly linked to an area of regulatory responsibility?a. The CPSC is responsible for regulating business-to-business products.b. The ICC is responsible for regulating interstate promotion activities.c. The EPA is responsible for regulating the impact of business activities on natural resources.d. The FTC is responsible for regulating the fairness and honesty of business practices.e. The FDA is responsible for regulating the food, drug, and additive industries. The Program Manager just received approval of his proposed acquisition strategy with one exception: he has been directed to make maximum use of existing Air Force software. Which ofthe best software acquisition practices is most applicable to his situation?a. Use system based software design b. Inspect requirements and design c. Assess reuse risks and cost d. Use metrics to manage Solve the following system of equations by the substitution method. 3x = y + 6 x = 2y - 1 Steam Workshop Downloader