Answer:
Option (A).
Explanation:
The new born parents require proper education to understand the behavior and importance of the needs of their child. Parents can hire professionalist as well.
The statement that they will not present in the room shows the contradiction. The parents should provide their presence to the child and makes him feel comfort by their touch. During the atruamatic care, teh child may get frighten and requires the parents presence.
Thus, the correct answer is option (A).
Long arms with short legs and a short, stable lumbar spine are traits associated with which of the following? Group of answer choices
1. arboreal quadrupedalism.
2. brachiation.
3. vertical clinging and leaping.
4. full-time bipedalism
5. terrestrial quadrupedalism.
Answer:
The correct answer is - option 2.
Explanation:
Brachiation is a movement or locomotion in which movement is occurred by the swinging from changing the hold from one arm to the other. In this primate such as spider monkeys, gibbons, and other similar primates those have long arms with comparatively smaller legs and stable but short lumbar spine. These longer arms help in making hold and swinging from one tree to another.
Thus, the correct answer is - option 2.
Answer:
Brachiation.
Explanation:
Arboreal activities are developed in the organisms that has the ability to fly and remains limited to the lands. Different arboreal mechanism include clinging, brachiation and leaping.
Brachiation is also known as the arm swinging in which the individual swings from one branch to other branch by using the arms only. The organisms that are adapted to brachiation has short legs and the longer arms. The lumbar spine is quite stable and supported by the forelimb.
Thus, the correct answer is option (2).
Mitochondria and chloroplasts are similar in that they both __________; however, they are different in that only chloroplasts, and not mitochondria, __________.
Answer: produce energy; photosynthesize
Explanation:
Mitochondria and Chloroplast are similar because both are cellular organelles involved in ENERGY PRODUCTION:
- Chloroplasts in green plants, due to its membrane containing chlorophyll molecules produces energy during photosynthesis
- Mitochondria in animal cells produces energy in form of ATP during lipid oxidation occuring in its membrane.
However, both organelles DIFFER in that ONLY CHLOROPLAST allows photosynthesis in its membrane, unlike Mitochondria
4. What do you think would happen to the intended protein if there were a DNA mutation whereby
one of the nitrogen bases (A, T, G, C) were replaced by a different one?
Some different proteins will be produced from the gene.
Explanation:When one of the nitrogen bases of a DNA is replaced by another, the phenomenon is called a point mutation. This condition actually is a mutation because, a gene translates into a protein through the mRNA. Now the DNA transcribes into a mRNA. If one of the nitrogen bases are changed in DNA, it will lead to change in the corresponding base of mRNA too. So the codon of which the changed nitrogen base is a part of, also changes which now codes for a different amino acid. So the protein structure also changes.
This condition is actually seen in sickle cell anaemia, where the 6th amino acid of haemoglobin changes from glutamic acid to valine, and the RBC structure becomes sickle celled owing to a hydrogen bond between valine and other amino acids.
Final answer:
A DNA mutation where one nitrogen base is replaced by another, known as a substitution mutation, might not change the protein if the amino acid remains the same (silent mutation). However, if it results in a different amino acid (missense mutation) or a stop codon (nonsense mutation), it could significantly impact the structure and function of the protein.
Explanation:
When a DNA mutation occurs that results in the replacement of one of the nitrogen bases (A, T, G, C) with a different one, this is known as a substitution mutation. The consequences of such a mutation on the intended protein primarily depend on whether the mutation leads to a change in an amino acid that is encoded by the affected DNA segment. Since the genetic code is degenerate, meaning that some amino acids are encoded by more than one codon, it's possible that a substitution might not change the amino acid sequence of the protein (silent mutation). However, if a different amino acid is encoded (missense mutation), this could alter the protein's structure and functionality. In more severe cases, if the mutation results in a stop codon (nonsense mutation), it could lead to the premature termination of protein synthesis, generating a truncated, often nonfunctional protein.
An example of how a seemingly small change can have significant effects is the substitution mutation in the hemoglobin gene that leads to sickle-cell anemia. Here, a single base change causes a different amino acid to be incorporated into the hemoglobin protein, drastically affecting its function and shape.
Your lab microscope is "parfocal." What does this mean?
A - the specimen is clearly is focus at this depth.
B - the slide should be almost in focus when changing to higher magnifications
C - you can easily discriminate two close objects as separate
Answer: The correct answer is that the specimen is clearly is focus at this depth.
Explanation:
A 'parfocal' microscope has the specimen to be viewed in focus, and easily viewed from the angles of several lenses positionally directed on it.
Thus, you NEED NOT move the specimen or slide to have the best view.
The term 'parfocal' refers to a feature of a microscope which allows the specimen to remain in focus when switching between different magnification levels.
Explanation:When a microscope is described as 'parfocal', it means that the microscope keeps the specimen in focus even as you switch between different objectives with varying magnifications. Typically, on a parfocal microscope, if your specimen image is focused at low power, you should be able to rotate to the next objective lens and have the specimen remain almost perfectly in focus. Thus, the correct answer is option B - the slide should be almost in focus when changing to higher magnifications.
This feature is particularly useful as it reduces the need for constant refocusing and allows you to analyze your specimen at different levels of detail without losing the focused image. It's a characteristic common in many laboratory and research microscopes.
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The tendency to apply one's own cultural values in judging the behavior and beliefs of people raised in other cultures is known as
A. cultural relativism.
B. cultural universalism.
C. ethnocentrism.
D. egocentrism.
E. cultural anthropology.
Answer: The correct answer is ethnocentrism
Explanation:
An estimation of the worth of other people way of life based on ONLY your own perspective or better still cultural understanding of what to wear, how to greet, how or what to eat etc, that you are familiar with is referred to as ETHNOCENTRISM.
In the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of the nucleotide being added and _____ of the last nucleotide in the polymer.
A) the 5' phosphate
B) C6
C) the 3' OH
D) a nitrogen from the nitrogen-containing base
Answer:
d
Explanation:
Answer: C) the 3' OH
Explanation: OH group of phosphoric acid at carbon 5 reacts with the OH group of of other molecule at carbon 3 with release of H2O, forming two ester bonds.
Impression materials that have mechanical properties permitting considerable elastic deformation but that return to their original form are classified as:
Answer:
Elastomeric
Explanation:
An elastomer is a polymer whose main characteristic is elasticity and can even recover its shape after being deformed
The chemical composition of an elastomer is the grouping of thousands of molecules called monomers, which join together forming huge chains. These large chains of polymers are those that give elasticity since they are flexible and are intertwined in a very messy way.
When an elastomer is stretched, its molecules align, allowing many times to take a crystalline appearance. However, upon releasing the tension, it immediately returns to its original state of elastic disorder. The above distinguishes elastomers from plastic polymers.
The only phylum in the group Parazoans is ________. A. Porifera B. Cnidaria C. Lophotrochozoa D. Ctenophora E. Ecdysozoa
Answer:
A. Porifera
Explanation:
Parazoan is a sub-kingdom of animal consisting only of the phylum of sponges (porifera), having two tissue layers only and lacking a nervous system and true digestive cavity.
They have certain characteristics like: sponges are marine, but there are some freshwater sponges that enjoy their water without salt. Most sponges do not have any type of symmetry, but some are radially symmetrical and they come in a variety of shapes, colors, and sizes, they are multicellular, heterotrophic and lack cell walls. Unlike other organisms, sponges lack true tissues and organs.
The mesohyl functions as an endoskeleton in most sponges, and is the only skeleton in soft sponges. This mesohyl is stiffened by mineral spicules, by spongin fibers or both.
What is the function of a selectively permeable membrane? A. It allows no large molecules to leave the cell and all large molecules to enter. B. It allows some molecules to enter the cell and blocks entry to others. C. It allows all molecules to enter the cell but blocks them all from leaving. D. It allows all molecules to enter the cell and allows all molecules to leave.
Answer: Option b: it allows some molecules to enter the cell and block entry to others.
Explanation: selective permeability allows those molecules to enter the cell which are small, uncharged. Large molecules pass slowly.
A rigorous scientific process used to combine findings from research (usually randomized controlled trials) into a powerful and clinically useful report to guide practice is known as a systematic review. Standard components of a systematic review to consider are: (Select all that apply.)
a. process for initiating.
b. standard reporting format.
c. reliability and validity of data.
d. process for synthesizing the body of evidence.
e. process for finding and assessing individual studies.
Answer: Options A, B, D and E.
A. Process for initiating.
B. standard reporting format.
D. process for synthesizing the body of evidence.
E. process for finding and assessing individual studies.
Explanation:
Systematic review is a scientific process which combines findings from research using random sampling of works from different source of a particular subject and integrating them into a powerful and clinically useful report to guide practice. It is a form of paradigm that guides and aids further research in a particular field.
However, there are components to be considered in other to create a perfect resolution. Initiation of the process begins with gathering of research from different source.
Then, individual research work is also accessed to derive facts and putting up a standard report to explain the total discovery.
An instructor is explaining to a group of students the way in which muscles and their associated tendons can be so strongly attached. The instructor makes references to the role of the basal lamina. Which statement most accurately captures an aspect of the basal lamina?A) It is produced by the connective tissue adjacent to it.B) It is present where connective tissue contacts the tissue it supports.C) It is found solely between connective tissue and muscle fibers.D) It is also known as the basement membrane.
Answer:
B) It is present where connective tissue contacts the tissue it supports
Explanation:
Basal lamina is an extracellular matrix layer which is secreted by the epithelial cells on which the epithelium rests.The basal lamina is a scaffold anchoring epithelial cells, muscles, and nerve cells. Both basal cells in epithelia bind to the underlying basal lamina, which in turn is attached to the underlying connective tissue.
A tricky question with no single right answer: In maintaining the functional shape of an enzyme, are the non-covalent interactions or covalent bonds stronger?
Answer:
Covalent interactions are stronger, due to the fact that each individual bond is a much stronger bond.
An nursing informatics specialist is planning to record her lecture for an in-service program and then upload it to a secure website. Participants in the in-service program are instructed to view the presentation before attending the in-person part of the program. The specialist hopes that viewing the presentation beforehand will stimulate a more involved question-and-answer discussion. Which software would the participants most likely use to view the presentation?
Answer: Google Drive
Google drive is a soft ware that allows users to store files; synchronized and accessed the files from simple devices (mobile and desktop); and share them with team members for viewing.
The administrator panel on the interface enabled the user to control the file sharing, monitor how the user shares the files, and protect against data loss.
It also enables the administrator to edit the files in real time events, and give rooms for other user to pass comments on the uploaded files
Media files, documents, slides can be stored and view by the media player and other software of the accessing devices
Therefore it is an ideal software for the Informatics nurse to use to enables the participant to peruse the presentation before the real session.
Explanation:
in order to maintain blood glucose homeostasis, which of the following events would likely occur in response to a significant rise in blood glucose.True/false
Answer:
False
Explanation:
The pancreas secretes insulin and glucagon. Both hormones work in balance to play a vital role in regulating blood sugar levels. If the level of one hormone is higher or lower than the ideal range, blood sugar levels may spike or drop.
A student received a flu shot in the fall. During the flu season, the student caught a cold. The most likely reason the vaccine he received did not prevent the cold was that:________.
a. his illness was not caused by a pathogen
b. he did not get the vaccine at the right time of year
c. his body produced antibiotics in response to the vaccine
d. the vaccine he received contained only flu virus antigens
Answer:
d. the vaccine he received contained only flu virus antigens
Explanation:
Vaccine imparts immunity to the person by providing them the preformed antibodies or the weakened antigens. Flu shots carry the antigens of the flu virus (the influenza virus) and trigger the formation of memory cells against this virus. The presence of memory cells against the flue virus antigens makes the person immune to flu after vaccination.
However, cold is caused by a different virus (rhinovirus mainly) that have antigens distinct from that of the flu virus antigens. Therefore, a person vaccinated with flu shots would not have the memory cells or the preformed antibodies against the cold virus. This person can catch a cold when infected with the respective virus.
Answer:
D
Explanation:
There are many different types of the flu and there are many different types of illnesses. Meaning that the vaccine could have only killed one strand of the flu or the student got a different type of sickness.
One of the most common causes of acute pain is a. trigeminal neuralgia. b. malignancy. c. headache. d. fibromyalgia.
Answer: Headache
Explanation:
The most common cause of the acute pain is headache. It can be specific or non specific.
The pain in the head can be caused due to any of the reason. It can a normal headache due to be being hungry for a longer period of time.
It can be a migraine pain, it can be pain due to tumor in the brain. There can be pain due to some injury.
Final answer:
The most common cause of acute pain among the given options is a headache, specifically tension headaches, which are due to muscle tension and stress.
Explanation:
One of the most common causes of acute pain is c. headache.
A headache is characterized by continuous pain in the head or neck area and can be caused by various factors including sinus inflammation, migraines, and tension. Tension headaches, which are often due to muscle tension in the shoulders, neck, and head, particularly during stress, account for about 42% of all headaches globally. They are the most common type and are experienced by well over one-third of the population in the United States annually. Factors such as stress can cause muscles to tighten, leading to the pain felt during a tension headache. Mild pain relievers like ibuprofen may help manage the pain.
Explain three unique ways fungi are different from other microbes (algae, protozoans, bacteria and archaea).
Answer:1) Fungi is a Eukaryotes
2) fungi possess hyphae
3) most fungi are not mobile
Explanation: Fungi is multicellular have a well developed cell structure which comprises of organelles where as other microbes are mostly unicellular and prokaryotes.
Fungi does not move but other microbes process structures for movement and can move
Which of the following pieces of additional data would help further investigate the relationship between bears, salmon, and influx of nitrogen into the local environment?
(A) The experimenters should remove the remains of salmon carcasses immediately after the salmon are eaten by the bears and determine the nitrogen content of the carcasses.
(B) The experimenters should increase the number of bears in the area and measure the amount of nitrogen available for uptake by plants.
(C) The experimenters should set up a net to catch salmon before they enter the area and then measure nitrogen influx.
(D) The experimenters should clear-cut the trees from the area and determine how much nitrogen remains in the streams.
Answer:
The relationship between bears, salmon, and influx of nitrogen into the local environment can be investigated with the help of following statement:
(A) The experimenters should remove the remains of salmon carcasses immediately after the salmon are eaten by the bears and determine the nitrogen content of the carcasses.
Explanation:
To determine the nitrogen content of the carcasses, the experimenters should remove the remains of salmon carcasses immediately after the salmon are consumed by the bears. The nitrogen are released to the environment from the dead animals.
The presence of black bears and salmon is related with increase in nitrogen influx. The interaction between bears and salmon influences the nitrogen dynamics in the environment. The nitrogen dynamics in the environment can be measured by measuring the carbon content of the carcasses.
Many fad treatments for autism spectrum disorders make the parents feel good that they are trying something, but otherwise, they are a waste of time and money.
Answer:
The statement is true.
Explanation:
The question is incomplete, here is the full question:
Many fad treatments for autism spectrum disorders make the parents feel good that they are trying something, but otherwise, they are a waste of time and money.
Is the statement true or false?
The given statement above is true because there are currently no known treatments or medicines discovered to treat Autism Spectrum Disorder (ASD) and most of the things the patients get recommended are only able to help with basic symptoms such as seizures or allergies etc. so the statement that they are a waste of time and money can be considered true.
I hope this answer helps.
The registered nurse is teaching the nursing process in psychiatric mental health nursing to a group of student nurses. Which statement made by the registered nurse needs correction?
Answer:
The healthy individual should be fit physically, mentally as well as socially. The mental health related problems can destroy the thinking power of an individual and can lead to stress and depression as well.
The proper and specialize psychiatric mental health nursing is required for the treatment of the individual. The statement that nursing diagnosis is done according to the client and family needs correction because the diagnosis depends on the health of the patient.
Select all of the examples that represent biological evolution.
1. Horses that get more exercise become stronger and will have foals that are stronger.
2. The number of individuals with the type O blood genotype increases in a small human population due to a reduction in population size.
3. One species from the mainland diverges into two distinct species on a group of islands.
4. Individuals in a population exposed to high levels of ultraviolet light become blind as adults and will have offspring that are also blind.
5. The frequency of the gene for sickle-cell anemia in a human population decreases from 0.002% to 0.001%.
Answer:
The correct answer is - option 2, 3, and option 5.
Explanation:
Biological evolution is the change in genetic level of an individual population that is developed or inherit over a period of time and several generations. Changes can be minute, large, can be identified or not noticeable.
In the given question some of the examples of biological evolution are given such as O genotype individuals increases due to the reduction in population size in the small human population, similarly, one species diverged into two different species on the basis of the adaption they developed in island. Sickle cell anemia frequency is also is an important example of the as it decreases over time.
Thus, the correct answer is - option 2, 3, and option 5.
Out of the provided scenarios, the representation of biological evolution can be identified in the instances where the type O blood genotype increases in a population due to genetic drift, one species on a mainland diverges into two species on an island, and the frequency of the sickle-cell anemia gene decreases in a population. So the correct option is 2,3 and 5.
Explanation:The question asks us to identify examples that represent biological evolution. Biological evolution is defined as a change in the genetic composition of a population over time due to processes such as natural selection, mutation, genetic drift, and gene flow.
Horses that get more exercise become stronger and will have foals that are stronger - this is not an example of biological evolution because it describes acquired characteristics, not genetic changes passed on to offspring.The number of individuals with the type O blood genotype increases in a small human population due to a reduction in population size - this could represent evolution through genetic drift, especially if the population reduction leads to the founder's effect or a genetic bottleneck.One species from the mainland diverges into two distinct species on a group of islands - this is an example of allopatric speciation, a process of evolution.Individuals in a population exposed to high levels of ultraviolet light become blind as adults and will have offspring that are also blind - unless the blindness is due to a genetic mutation passed on to the offspring, this is not an example of evolution, rather an example of an environmentally induced condition.The frequency of the gene for sickle-cell anemia in a human population decreases from 0.002% to 0.001% - this represents evolution as there is a change in allele frequency in the population.Thus, instances 2, 3, and 5 would be the examples of biological evolution.
how do the characteristics of shale change with increased pressure and temperature?
Answer: Shale changes into Slate.
Explanation:
Shale is a sedimentary rock, formed by the deposition and compression of clay and silt.
Shale layers is buried deep into the earth through the process of deposition (i.e the laying down of rock forming material by natural entities like glaciers, wind, and water).
Temperatures and pressures rise greatly because the shale’s layers are buried. When the temperatures and pressures become higher. The shale is changed into a metamorphic rock (with dark brown streak), called Slate.
Final answer:
Shale changes under increased pressure and temperature during metamorphism, becoming denser, harder, and ultimately transforming into metamorphic rocks such as schist, with the original bedding obscured and the presence of new minerals aligned perpendicular to pressure.
Explanation:
When shale is exposed to increased pressure and temperature conditions, it undergoes a metamorphic transformation. Temperature and confining pressure play significant roles in altering the rock's characteristics. As the temperature rises, the energy of the shale's minerals increases, resulting in increased atomic vibrations and potential atom swapping within the crystal lattice. This process can lead to the formation of new minerals and changes in the rock's chemical equilibrium.
With an increase in pressure, especially confining pressure, the rock becomes denser and harder. This results in textural changes such as the realignment of mica crystals in the direction perpendicular to the main stress, a characteristic commonly seen when shale metamorphoses into schist. Additionally, the original sedimentary bedding of shale becomes difficult to distinguish after it has been significantly altered by heat and pressure.
Through this metamorphic process, shale can recrystallize and form different types of metamorphic rocks, such as hornfels or schist, depending on factors like the rock strength and the presence of chemically reactive fluids. Over time, increased depth within the Earth's crust introduces high pressure and temperature, which lead to various degrees of metamorphism, ultimately changing the characteristics and appearance of the original shale rock.
(Multiple answers) Choose which of the following are true for how the Dietary Reference Intakes (DRI; includes RDA, AI and UL) may be appropriately used: Group of answer choices planning diets for population groups (like military or schools) estimating the adequacy of an individual's nutrient intake. estimating the nutrient needs of persons with medical problems.
Answer:
Correct Answer: Estimating the adequacy of an individual’s nutrient intake
Explanation:
Dietary Reference Intake is used to plan a diet for a regular healthy individual and not for a group of people or for people with medical problems. This is Dietary Reference introduced by the Institute of medicine of the national academies in the US. In order for it to be an average reference that can be widely used by people everywhere around the globe it has to take into account the nutrition recommendations for a single healthy individual, as this eliminates several unknown variables. People with medical problems or population groups cannot appropriately use this as a reference as they do not represent a dietary norm; however, individuals from these groups are free to use the DRI in order to properly plan their meals and nutritional intake.
Final answer:
Dietary Reference Intakes (DRIs) include a range of reference values for nutrient intake which are used for diet planning for groups and individuals, as well as assessing dietary adequacy and determining nutrient needs for those with medical conditions. These reference values adjust based on age, gender, health status, and activity level.
Explanation:
The Dietary Reference Intakes (DRIs) are a set of reference values used for planning and assessing nutrient intakes of healthy people. These values, which vary by age and gender, include the Estimated Average Requirement (EAR), Recommended Dietary Allowance (RDA), Adequate Intake (AI), and the Tolerable Upper Intake Level (UL). The DRIs can indeed be used for various purposes including planning diets for population groups such as military or schools, estimating the adequacy of an individual's nutrient intake, and as a reference point in assessing nutrient needs of persons with medical problems, although care and additional considerations should be given in such medical circumstances.
The RDA provides a guideline that professionals use to assess diet quality and is set to meet the needs of 97.5% of the population, based on the EAR. Understanding the different nutrient requirements can help individuals meet their specific nutritional needs, tailored by factors such as age, gender, health status, and activity level. Given the public health concern in the United States, key quantitative recommendations are also provided for limiting certain components of the diet within calorie restrictions to achieve healthy eating patterns.
Seizures that involve both hemispheres at the outset are termed a. complex. b. generalized. c. partial. d. focal.
Answer:
b. generalized
Explanation:
Generalized seizure is a type of seizure that is caused by an abnormal electrical activity throughout the brain, which begins with both hemispheres at the same time rather than starting at a discrete focal point.
Grand mal seizure also called tonic-clonic seizure is a type of generalized seizure caused by epilepsy, stroke or other factors. A person affected by this usually becomes unaware of his environment when experiencing this type of seizure. The person losses consciousness, followed by muscle convulsions.
A relationship between a male and female living in a pair bond for an extended period of time is called __________.
A. polygyny
B. one-male polygyny
C. monogamy
D. polyandry
Answer:
C. monogamy
Explanation:
Polygyny : It is defined as a pattern of mating in which a male has more than one female mate i-3 two or more women share a common husband.
One-male polygyny : It is defined as the mating system in which one male lives with multiple females and also mates with them but each of the female mates only with a single male.
Monogamy** : It is defined as practice of marrying or state of being married to one person at a time i-e having a sexual relationship with only one partner and the habit of living with one mate at a time.
Polyandry : It is basically a polygyny in which a woman has more than one husbands.
As in the above scenario, only option C matches the required credentials.
Hence option C) Monogamy is the right answer.
The cellular process of synthesizing large molecules from smaller ones is defined as The cellular process of synthesizing large molecules from smaller ones is defined as __________.a. metabolism. b. catalysis. c. dehydration. d. anabolism. e. catabolism.
Answer:
D (anabolism)
Explanation:
Organisms of differing range undergo certain chemical reactions in their cell. The collection of all the chemical reaction they undergo is called METABOLISM. Metabolism is a balance between its two types which are: ANABOLISM and CATABOLISM.
Anabolism is the build up of larger and complex units or molecules using smaller ones. Due to the fact that it involves building up, it is referred to as CONSTRUCTIVE METABOLISM. The anabolic process usually involves expending energy to assemble this smaller molecules, hence it is said to be ENDERGONIC i.e. energy requiring. A common example of anabolism occurs in the Chloroplast of plant cells, where the captured energy from sunlight is used to assemble carbondioxide (CO2) and water (H2O) to form an organic sugar molecule (glucose).
On the other hand, CATABOLISM is the opposite of anabolism, and it involves breaking down of these complex molecules into simpler ones. The energy released in this process is made use of in anabolism.
The process of synthesizing large molecules from smaller ones is called anabolism, which is option d. It is a metabolic process that generally requires energy, which is derived from catabolism, another part of the body's metabolic systems.
Explanation:An instance of an anabolic process can be seen in the creation of proteins from individual amino acids. Anabolism is a type of metabolic process in the body that builds up complex molecules from simpler ones. It generally requires energy, which is derived from catabolism, the process that breaks down complex molecules into simpler ones. Therefore, anabolism and catabolism are parts of the larger metabolic process in an organism.
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Nearly all cells in an organism contain identical DNA, and each DNA strand may contain hunndreds or thousands of individual genes. Is it likely that a cell would transcribe all the genes within its nucleus simultaneously.
A. True
B. False
Nearly all cells in an organism contain identical DNA, and each DNA strand may contain hundreds or thousands of individual genes. It is likely that a cell would transcribe all the genes within its nucleus simultaneously.
A. True
B. False
Answer:
B. False
Explanation:
All the cells present in the bodies of the multicellular organisms are derived from the zygote and therefore carry identical DNA. However, cells are differentiated to perform specific functions. Also, cells may perform different functions at different times depending upon the need of the body. So, all the genes present in the DNA of a cell are not expressed simultaneously. Cells only express the genes whose protein products are required at that time.
For example, genes required for secretion and release of insulin in the endocrine cells of the pancreas would be expressed only when the blood glucose levels are higher.
In addition to having a 50% chance of inheriting autosomal dominant disorders from an affected parent, such a disorder is characterized by:
Answer: In addition to having a 50% chance of inheriting autosomal dominant disorders from an affected parent, such a disorder is characterized by equal frequency of occurrence in both sexes (male and female).
Explanation: Autosomal dominant disorder has the following characteristics;
1. Appears in both sexes with equal frequency.
2. Does not skip generations.
3. Affected offsprings must have an affected parent unless they possess a new mutation.
4. Unaffected parents do not transmit the disorder.
5. When one parent is affected (heterozygous) and the other parent is unaffected, approximately 50% of the offsprings will be affected.
a 26-year old g1p0 woman with last menstrual period 13 weeks ago presents to your office for her first prenatal visit. she reports vaginal spotting for the last two days. you perform an ultrasound that shows an intrauterine pregnancy consistent with 11 weeks gestation with no cardiac activity.?
Answer:
It means that a miscarriage (specifically a MISSED MISCARRIAGE) had occured.
EXPLANATION:
A miscarriage is defined as the spontaneous loss of pregnancy before 20 weeks of gestation.
Types:
A. SPONTANEOUS ABORTION: The spectrum of spontaneous abortion includes:
-Complete Miscarriage: Here the uterus is empty. All pregnancy tissues have been expelled from the body.
-Incomplete miscarriage: Some tissue or placental material still remains in the body. On ultrasound, retained products of conception are seen.
-Missed miscarriage: The embryo dies intrauterine, uterine size is equal to or less than gestational age, cervix is closed and pregnancy symptoms start to regress.
-Threatened miscarriage: Bleeding and abdominal cramps point to a possible miscarriage.
The cervical os is closed.
-Inevitable miscarriage: The cervical os is open. The presence of bleeding, cramping, and cervical dilation indicates that a miscarriage is inevitable.
-Septic miscarriage: Ultrasound finding is retained products of conception.
Symptoms may include Fever, chills and rigor, abdominal pain, prolonged bleeding or foul-smelling vaginal discharge.
B. INDUCED MISCARRIAGE
-Legal/Therapeutic
-Illegal/Criminal
A 26-year-old woman showing an 11-week intrauterine pregnancy with no heartbeat likely indicates a miscarriage, requiring further evaluation. Implantation bleeding could explain spotting after 3 weeks from the last menstrual period, whereas pitocin is used to induce labor in a post-term pregnancy.
Explanation:The presentation of this 26-year-old G1P0 woman, who is 13 weeks post menstrual period with an ultrasound showing an intrauterine pregnancy at 11 weeks with no cardiac activity, could indicate a missed abortion or miscarriage. Spotting and the lack of a detectable heartbeat are significant findings. In a normal pregnancy, cardiac activity is usually visible on an ultrasound by 6 weeks gestation. The discrepancy between the menstrual history and ultrasound findings might be due to a delayed miscarriage, where the fetal demise occurs but is not immediately followed by the expulsion of the pregnancy tissue. It's essential for the healthcare provider to further evaluate and manage the situation, often with follow-up ultrasounds, HCG level monitoring, and discussions regarding possible medical or surgical management of the miscarriage.
Regarding the provided case scenarios, the brief episode of cramping and bleeding approximately 3 weeks after the last menstrual period is often due to implantation bleeding, which is when the embryo attaches to the uterine wall. The woman who experiences mid-cycle pain after unprotected sex has a valid concern about pregnancy as ovulation is taking place, which increases the chance of fertilization. Furthermore, the administration of pitocin in the 41-week pregnant woman is due to induction of labor as the pregnancy is post-term and labor is not progressing.
After teaching nursing students about childhood exanthems, the instructor determines that the teaching was successful when the students identify what as the primary cause?
Answer:
The correct answer is - viruses.
Explanation:
Most of the exanthems that occur in childhood are due to viruses such as adenovirus, measles, chickenpox and many others including various herpes infections.
These exanthems are very normally common in general but appearance could be different. Viral exanthems are major cause of the childhood exanthems these are appeared to pink or red skin patch over various and large part of body.
Thus, the correct answer is - viruses.