Membrane Bound Organelles, especially the nucleus which contains the genetic material and is enclosed by the nuclear envelope.
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Answer:
The two main division of the living organism are the prokaryotes and eukaryotes. The prokaryotes and eukaryotes shows the well marked different features in their structure and function.
The prokaryotice cell lacks the well developed membrane bound nucleus. The cell organelle of prokaryotic cells lacks the membrane bound organelle and the endomembrane system is absent in the prokaryotic cells. The prokaryotes contains the 70'S ribosomes and circular DNA.
In what way does a sunburn impair the body's ability to defend itself?
Sunburn, caused by excessive sun exposure, damages DNA and can lead to the development of cancerous cells. It also prompts a temporary defensive tanning response, can cause rapid skin aging, and impedes the skin's ability to maintain homeostasis and produce vital vitamin D.
Explanation:Excessive exposure to the sun results in sunburn, which hampers the body's defensive capacity in several ways. The UV-B and UV-C radiations from the sun cause damage to the DNA in the skin cells, leading to mutations and possibly forming cancerous cells. The body's response to this is tanning, a protective mechanism where pigments are produced in the inert skin layers to shield the underlying living cells.
However, this tanning response peaks about ten days after initial sun exposure and is temporary, with melanin-filled keratinocytes in the stratum corneum eventually sloughing off. Long-term or severe sunburn can also damage collagen fibers, accelerating skin aging and wrinkle formation. Furthermore, the sunburn can potentially cause dehydration, creating a conducive environment for pathogen invasion and skin infections. Lastly, sunburn can impede the skin's ability to maintain homeostasis and synthesize vitamin D, both critical to overall body well-being.
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what purpose does the atomic battery serve
The atomic batteries are used majorly as the power sources for the equipment which needs to operate unattended for a longer period of time like pacemakers, spacecraft, as well as automated scientific stations.
Further Explanation:
An atomic battery refers to a device which mainly utilizes energy from the decay of the radioactive isotope in order to produce electricity. In case of nuclear reactors, these generate electricity from nuclear energy, however, vary in that they do not use any chain reaction. As compared to other batteries, these are pricey but come with long life as well as high energy density.
The decay products of radioactive isotopes are used for the generation of electricity in atomic batteries. These batteries are also known as radioisotope generators. The first atomic battery was composed of glass sphere which consists of a silver interior lining and an emitter of radioactive radium isotope. The charge was build up through the deposition of emitted charged particles on the silver. This resulted in the extraction of electric current through capacitors powered by radioactive isotopes. The atomic batteries have a long life and require minimum maintenance as compared to the traditional batteries. The atomic batteries are also advantageous because they are not dependent on sunlight and are light weighed.
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Answer Details:
Grade: High school
Subject: Physics
Topic: Atomic Battery
Keywords:
Atomic battery, pacemaker, nuclear energy, underwater systems, electricity, traditional batteries, radioactive isotopes, radioisotope generators, electrochemical reactions.
An atomic battery is a device that utilizes energy from the decay of radioactive isotopes in order to generate electricity. Such types of batteries are used for the following purposes:
Underwater systems.Automated scientific stations.In the remotes of various toys and equipment.Pacemakers.Spacecrafts. What is an Atomic battery?An atomic battery may be defined as a type of device that significantly produces electricity by using radioisotopes that produce low-energy beta particles or sometimes alpha particles of varying energies.
These batteries are also called radioisotope generators because they are such types of devices that extract electric current through capacitors supplied powered by radioactive isotopes.
Atomic batteries have high intensity and make it possible to run the apparatus by converting its chemical energy into electrical energy.
Therefore, the atomic battery serves the purposes like spacecraft, pacemakers, Underwater systems, Automated scientific stations, the remotes of various toys and equipment, etc.
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About how many kcalories would someone spend just resting for an entire 24 hour period?
As the pesticide DDT moves up the trophic levels in a food web, the concentration of DDT within organisms
how can infectious and noninfectious affect personal health?
When a composition has an even distribution of either actual weight or visual weight it has?
Covalent bonds between the sugar of one nucleotide and the _____ of the next nucleotide bond nucleotides together in a dna strand.
a. helix
b. sugar
c. phosphate
d. base
The right answer is phosphate.
DNA has a double helix structure (discovered in 1953 by James Dewey Watson, Francis Crick et al.).
DNA is a polymer of deoxyribonucleic bases, more commonly called nucleotides. Each nucleotide consists of a phosphate group (or phosphoric acid) bonded to a sugar, deoxyribose, itself linked to a nitrogenous base. These bases are four in number: adenine (denoted A), thymine (denoted T), cytosine (denoted C) and guanine (denoted G). The backbone of the DNA is formed by the sugar-phosphate repetition.
Identify the components of the plasma membrane involved in facilitated diffusion
Facilitated diffusion, is a type of diffusion that uses a medium such as a channel in the plasma membrane for any particle to pass from high to low concentration gradient. Moreover, this type of transport is described as passive since it does not use ATP.
Answer:
Facilitated diffusion, is a type of diffusion that uses a medium such as a channel in the plasma membrane for any particle to pass from high to low concentration gradient. Moreover, this type of transport is described as passive since it does not use ATP.
Explanation:
Assign each characteristic to the appropriate type of muscle fiber.
Fast twitch (type II) and slow twitch (type I) muscle fibres are the two kinds. Fast twitch muscle fibres are distinguished by their capacity to contract quickly despite being highly fatigued, whereas slow twitch muscle fibres are characterised by their capacity to contract for extended periods of time with low degrees of exhaustion.
Running, cycling, and swimming are examples of endurance sports that require slow twitch muscle fibres. They can exert modest levels of effort continuously for a very long time without getting tired.
To maintain balance and posture, slow-twitch muscle fibres are also employed. Sprinting, leaping, and weightlifting are among the activities that predominantly need fast twitch muscle fibres. They can produce a lot of force very rapidly.
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Complete obstruction of bile flow to the liver would be manifested by:
A cutting board is scratched and chipped what should the food handler do servsafe
If a cutting board is scratched and chipped, it may harbor bacteria that can contaminate food. As a food handler, it is important to address this issue to maintain food safety.
Explanation:If a cutting board is scratched and chipped, it may harbor bacteria that can contaminate food. As a food handler, it is important to address this issue to maintain food safety. Here are the steps to take:
Remove the cutting board from use: Immediately take the damaged cutting board out of service to prevent further contamination.Replace or resurface the cutting board: Depending on the severity of the damage, you may need to replace the cutting board with a new one. Alternatively, if the damage is minor, you can choose to resurface the board by sanding down the surface and resealing it.Sanitize and inspect the replacement/repaired cutting board: Before putting the cutting board back into use, thoroughly sanitize it using an approved sanitizer. Inspect the board to ensure it is smooth, free of any cracks or chips, and regularly maintain it to prevent future damage.By following these steps, you can ensure that your cutting board remains in good condition and helps to maintain food safety.
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The diagram represents three sections of a cell membrane showing three different methods involved in the transport of various molecules across the membrane.
State one reason why the movement of molecules in Method C represent active transport.
Method C represents active transport because molecules/ions move AGAINST a concentration gradient.
Active transport is a type of transport across biological membranes by which cells move substances/ions against a concentration gradient.
In active transport, substances move from a region of low concentration to a region of high concentration.
Moreover, active transport requires energy to catalyze the movement of substances against a concentration gradient, which is usually provided by the hydrolysis of ATP (the energy coin of the cell).
In conclusion, Method C represents active transport because molecules/ions move AGAINST a concentration gradient.
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Seth is chatting with his friends in a café. Suddenly, the power goes off, and it’s completely dark. After a few moments, he’s able to see the outlines of the objects and people nearby. Which cells are responsible for his ability to see the objects and people?
cone
glial
olfactory
rod
It's the rod cells that see better in dim lighting
The correct answer is rod cells.
The rod cells are accountable to visualize night vision and react well towards dim light. The rod cells refer to the photoreceptor cells found in the retina of the eye, which can work in less powerful light in comparison to the other kind of visual photoreceptor, that is, cone cells.
The rod cells are generally witnessed in clustered form at the outer periphery of the retina and are used in peripheral vision.
Hydrogen fuel is clean but not cost-effective. ???
A client takes isosorbide dinitrate daily. the client states, "i would like to start taking sildenafil for erectile dysfunction." the nurse explains that taking both of these medications concurrently may result in which complication?
Which organ system of the body is responsible for removing foreign substances from the blood and aiding in fat absorption?
The lymphatic and digestive systems, particularly the liver, are responsible for removing foreign substances from the blood and assisting in the absorption of fats. Lacteals in the small intestine absorb fats, which are then transported to the bloodstream. The liver produces bile for fat breakdown and helps to detoxify blood.
Explanation:The Organ Systems Responsible for Foreign Substance Removal and Fat Absorption
Two organ systems are primarily responsible for removing foreign substances from the blood and aiding in fat absorption: the lymphatic system and the digestive system. The liver, as part of the digestive system, plays a pivotal role in detoxifying blood and in the digestion of fats. The liver produces bile required for the breakdown of fats in the duodenum and also processes vitamins and fatty acids. In addition, the liver synthesizes plasma proteins and filters blood.
The lymphatic system also contributes significantly to the process of fat absorption, particularly through structures known as lacteals. These are found in the villi of the small intestine and are responsible for absorbing digested lipids, which are then transported via the lymphatic vessels to the bloodstream.
The gallbladder supports the digestive system by storing and concentrating bile salts, aiding the liver in its digestive functions. Other organs, including the kidneys and spleen, are involved in filtering the blood, removing waste, and offering reservoirs for immune factors. However, it's the symbiotic functions of the liver and lymphatic system that directly handle both the removal of foreign substances from the blood and the absorption of fats.
The pathophysiology of heart failure involves an interaction between decreased pumping ability and the ________ to maintain cardiac output
The pathophysiology of heart failure includes an interface between lessened pumping ability and the compensatory mechanisms to maintain cardiac output. Compensatory mechanism is An action done by the body to tolerate physiological function in spite of an adjustment in natural function.
In order to survive bacteria need moisture oxygen and what
According to scientists, ocean waves could be a source of energy. Devices are being designed to capture the energy from waves and supply electricity to coastal areas. A direct benefit of utilizing this technology to produce energy would be the
destruction of habitats near the devices
decreased use of nonrenewable resources
release of gases needed for photosynthesis
increased use of finite resources
If we say something is beneficial, it must be positive and really mean to give advantage to one thing or another. Wave energy is a renewable energy since it can be used repeatedly over time without any problem on supply. Hence the greatest benefit it can give would be:
decreased use of nonrenewable resources
Glaciers can only form when
a.there is an ice age
b.there is a U-shaped valley in the mountains.
c.the amount of snow exceeds the amount of rain.
d.more snow falls than melts.
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_____ is an enzyme that has the capacity to add dna to shortened telomeres, rebuilding and extending the length of telomeres.
True or false? Mandatory license plate revocation is ineffective against drunk driving
Answer: Mandatory license plate revocation is ineffective against dru;nk driving. True
Explain the relationship between homologous chromosomes and the relationship between sister chromatids. how are these relationships different from one another?
Homologous chromosomes are similar in size and shape. they have the same genes and originate from different parents. Sister chromatids are found in replicated and contain exact copies of the single double helica; molecule of DNA.
Actually homologous chromosomes can be defined as the chromosomes same in shape and size, and carry the genes of contrasting chaacteristics..Chromatids whic separate in metaphase of cell division are sister chromatids.
Which is not an essential characteristic of high-quality day care?
All growth of a flowering plant takes place within specialized tissues called
The growth of all flowering plant takes place within the specialized tissue called the meristems. They are tissues in the plants in which they have the role of dividing the plant’s cell and in the same way this is where the growth is being done.
Which is not a similarity that those with anorexia nervosa and bulimia nervosa share? they are fearful of becoming obese. they both experience substance abuse. they are both sexually experienced. they both have a heightened risk of suicide attempts?
As per studies about anorexia nervosa and bulimia nervosa, the following similar characteristics include being fearful of becoming obese, substance abuse and low self-esteem. Low self-esteem can result in suicide attempts, therefore; the only dissimilarity among the four choices is “that they are both sexually experienced.” No report is found to match this claim, at the same time, the typical onset of both diseases occur during early teens and late teen years, so they are far from being sexually experienced.
What hormonal preparations are used to raise the sperm count in infertility cases?
A genetically engineered corn plant is approved for agricultural use. The plant produces pollen that can make its own toxins. These toxins protect the corn plant against pests. What is a likely impact on the farmer of growing such a variety of corn?
The financial costs for the farmer would be lowered.
Federal agencies could initiate legal action against the farmer.
The farmer may be held responsible for increasing chemical pollution.
The farmer's expenses for pest control would increase due to an increase in bee population.
Answer: The financial costs for the farmer would be lowered.
Explanation:
According to the given situation, the genetically grown corn is capable of producing the pollen which consists of toxins. These toxins will kill the pests. Therefore, it reduces the cost of pesticides. Hence, the overall financial costs for the farmer would be lowered.
Which of the following factors can lead to desertification in the presence of natural drought?
a.
deforestation
b.
sustainable grazing
c.
underground mining
d.
all of the above
(Not B)
A nurse is caring for a client with multiple myeloma. which laboratory value is the nurse most likely to see?
Multiple myeloma is cancer that forms in your plasma cells and causes cancer cells to accumulate in the bone marrow. Plasma cells are cells which help you fight infections by making antibodies that attack germs. If signs and symptoms develop like bone pain or nausea, a number of treatments can be done to help control your multiple myeloma.
A nurse caring for a client with multiple myeloma is most likely to see his blood count. Complete blood count (CBC), is done to measure the levels of red cells, white cells, and platelets in the blood. If there are too many myeloma cells in the bone marrow, the most common finding is a low red blood cell count.