Answer:
Explanation:
Cells are the basic unit of life, and they are responsible for carrying out all of the functions necessary for an organism to survive. The skin is the largest organ in the body, and it is composed of many different types of cells, each with a specific function that is essential for maintaining the health and integrity of the skin.
The main components of a cell include the cell membrane, cytoplasm, and nucleus. The cell membrane is a thin, flexible barrier that surrounds the cell, and it is responsible for regulating the movement of materials into and out of the cell. The cytoplasm is the gel-like substance that fills the cell, and it contains all of the organelles and other structures necessary for the cell to function. The nucleus is the "control center" of the cell, and it contains the cell's genetic material, which is responsible for directing the cell's activities.
In the skin, the main types of cells include keratinocytes, melanocytes, Langerhans cells, and Merkel cells. Keratinocytes are the most abundant type of skin cell, and they are responsible for producing the protein keratin, which helps to form a protective barrier on the surface of the skin. Melanocytes produce the pigment melanin, which helps to protect the skin from the harmful effects of the sun. Langerhans cells are part of the immune system and are responsible for recognizing and responding to foreign invaders in the skin. Merkel cells are involved in the sense of touch and help to detect pressure and texture.
Overall, the function of skin cells is to protect the body from the outside environment, maintain homeostasis, and provide sensory information. The various types of skin cells work together to maintain the health and integrity of the skin, and each type of cell has a specific function that is essential for this process. The components of a cell, such as the cell membrane, cytoplasm, and nucleus, are critical for the proper functioning of skin cells and are essential for the survival and health of the skin.
the macromolecule that runs your body and expresses your traits
The macromolecule that runs your body and expresses your traits is Protein.
Carbohydrates, nucleic acids, and proteins are often found as long polymers in nature. Because of their polymeric nature and their large (sometimes huge!) size, they are classified as macromolecules, big (macro-) molecules made through the joining of smaller subunits.
The traits of a living thing depend on the complex mixture of interacting components inside it. Proteins do much of the chemical work inside cells, so they largely determine what those traits are.
For a gene to be expressed, a protein will bind to the promoter region, telling the cell to transcribe the DNA into RNA. The messenger RNA will go to a ribosome and provide the directions for translation, or making a protein. If for some reason a gene is not expressed, that trait won't show up.
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the number and variety of different species in a given area is called?
The phrase "biodiversity" refers to the quantity and variety in species found in a given location.
Contrarily, interspecies biodiversity is the variety of life forms among themselves, including their diversity in terms of both quantity and variety as well as relative importance. The variety of creatures, plants, fungi, or even organisms such bacteria that cause up our natural environment are all included in what is known as biodiversity. The phrase "biodiversity" refers to the quantity and variety in species found in a given location. Biodiversity, often known as biological diversity, refers to the range of life that can be found on Earth, or frequently, the whole range of life. The number of species is a frequent indicator of this variability, which is known as species richness.
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which finding is typical of chronic glomerulonephritis
Chronic glomerulonephritis is a chronic kidney disease characterized by inflammation and damage to the glomeruli, which are the tiny filters in the kidneys that help filter waste from the blood.
The most common finding in chronic glomerulonephritis is a decrease in the glomerular filtration rate (GFR) due to the decreased number of functioning glomeruli. Other typical findings include proteinuria, hematuria, and hypertension. Proteinuria is an increased amount of protein in the urine, hematuria is the presence of red blood cells in the urine, and hypertension is an increased blood pressure. These findings can be further confirmed by a biopsy of the kidney, which may show evidence of inflammation and scarring of the glomeruli.
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How do our oceans help reduce the effects of climate change felt on the land and in the atmosphere?
A. They absorb and hold heat and carbon dioxide.
B. They adjust pH so that acidification does not affect the organisms living there.
C. They release carbon dioxide back into the atmosphere and cool the surrounding area.
D. They create winds from ocean currents to cool the land and atmosphere.
Answer:they absorb and hold heat and carbon dioxide
Explanation:
Oceans help reduce the effects of climate change felt on land and in the atmosphere as they absorb and hold heat and carbon dioxide, which is in Option A as the oceans play a crucial role in mitigating the effects of climate change.
What is the ocean's function?Oceans are the largest carbon sink on the planet and absorb a significant amount of carbon dioxide from the atmosphere, and the ocean's absorption of carbon dioxide helps to reduce the amount of carbon dioxide and regulate climate change.
Hence, oceans help reduce the effects of climate change felt on land and in the atmosphere as they absorb and hold heat and carbon dioxide, which is in Option A.
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What is the purpose of a drug ad placed by a drug company that mentions a medical condition, but not a drug name?
O The drug company hopes people will demand that the government spend money on research for the condition. O The goal is to get people to ask their doctor about drugs that might treat a condition. O The purpose is for people to join an organization that works to help the condition. O The main purpose is to increase people's awareness of a medical condition.
The purpose of a drug ad placed by a drug company that mentions a medical condition, but not a drug name is the drug company hopes people will demand that the government spend money on research for the condition.
What is the goal to get people to ask their doctor about drugs?The goal is to get people to ask their doctor about drugs that might treat a condition. The purpose is for people to join an organization that works to help the condition. The main purpose is to increase people's awareness of a medical condition.
The Drugs and Drug Trafficking Act was created to make it illegal to consume, possess, or deal in drugs as well as to engage in certain activities related to their production or supply.
Therefore, The purpose of a drug ad placed by a drug company that mentions a medical condition.
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What are Lysosomes responsible for in the cell
A. storing nutrients
B. protein synthesis
C. cleaning up the cell
C. cleaning up the cell. Proteins, nucleic acids, carbohydrates, and lipids can all be broken down by the variety of enzymes found in lysosomes, and membrane-enclosed organelles.
What functions does the lysosome perform?Every eukaryotic cell has membrane-bound organelles called lysosomes. They are well-known as terminal catabolic stations that eliminate waste from cells and scavenge metabolic raw materials to maintain vital biosynthetic reactions under famine.
Are nutrients stored in lysosomes?Aside from storing and supplying nutrients, the lysosome also produces building blocks (such as amino acids), recycles nutrition and growth factor receptors, and takes part in the quality assurance for crucial metabolic organelles.
Are proteins recycled by lysosomes?Human cells' lysosomes capture and degrade defective proteins to recycle amino acid building blocks.
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What is "body scaling"?
The body-scaling effect is a phenomenon in which our own body, whether actual or virtual, alters how we perceive sizes and distances.
Allometry is a well-known study, particularly in statistical shape analysis for its theoretical advancements and in biology for practical applications to the differential growth rates of the bodily sections of a living organism.
One use is in the study of many insect species (for example, Hercules beetles), where a modest change in overall body size can result in a massive and disproportionate increase in the dimensions of appendages such as legs, antennae, or horns.
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During osmosis, water moves across a selectively permeable membrane toward a solution with:
A. The lowest solute concentration B. Less water molecules C. More water molecules D. All of the above
Answer:
B
Explanation:
l hope yo understand the answer
what kind of structure is the fippers of dorudon and the legs of artiodactly
The flippers of dorudon are homologous to the front legs of land mammals. Artiodactyls are even-toed ungulates that include hippopotamuses, deer, giraffes, llamas, camels, pigs, cows, sheep, and goats.
Pakicetus and other early whales were normal terrestrial creatures. They possessed tall heads and big fangs, which they could use to consume meat. They don't resemble whales at all from the exterior. Their skulls, however, resemble those of live whales and are unlike those of any other animal, notably in the inner ear area, which is encircled by a bone wall.
Frequently, seemingly modest characteristics provide vital evidence to link creatures with highly specialized lives (such as whales) with their less extreme-looking ancestors.
Ambulocetus appears to have enjoyed a more aquatic existence than other early whales such as Indohyus and Pakicetus. It has shorter legs and bigger hands and feet resembling paddles. It has a longer tail.
The theory that Ambulocetus had an aquatic existence is further supported by stratigraphic data — Ambulocetus's fossils were collected within strata that most likely represented an old estuary — and oxygen isotopes in its bones. Animals are what they eat and drink, and the oxygen isotope ratios in saltwater and freshwater differ.
This implies that by researching the isotopes absorbed into an animal's bones and teeth as it developed, we may learn about the type of water it drank. Ambulocetus drank both saltwater and freshwater, according to the isotopes, which fits nicely with the hypothesis that these creatures lived in estuaries or bays between freshwater and the open ocean.
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What is the definition of Genetic diversity?
Answer: The range of different inherited traits within a species : genetic diversity
Explanation: In a species with high genetic diversity, there would be many individuals with a wide variety of different traits. It is very critical for population to adapt to changing environments.
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How does embden-Meyerfoh help red blood cells carry oxygen to the rest of the body?
Answer:
Embden-Meyerhof pathway (EMP) is a metabolic pathway that helps red blood cells carry oxygen to the rest of the body. This pathway breaks down glucose molecules and produces energy in the form of adenosine triphosphate (ATP), which is then used by red blood cells to transport oxygen. The EMP pathway also produces other molecules, such as pyruvate, lactic acid, and other compounds, which can act as a buffer to help regulate the pH of the red blood cell. This helps to ensure that oxygen can be effectively transported to other organs and tissues in the body.
What is an external occipital protuberance?
The external occipital protuberance is a bony protrusion or bump located on the back of the skull, near the base of the skull where it meets the neck. It is also known as the external occipital protuberance or inion.
The external occipital protuberance is a point of attachment for various muscles and ligaments that are involved in neck and head movements. It is more prominent in some individuals than others and can vary in size and shape.
In addition to its biomechanical function, the external occipital protuberance can also be used as a landmark for medical imaging and surgery, as it can be easily palpated and identified on the surface of the skin.
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select the correct statement describing sympatric speciation.
Sympatric speciation can occur in a single generation.
what is sympatric speciation?Sympatric speciation is a type of speciation where new species arise from a single ancestral species within the same geographic area, without physical barriers to gene flow. This process can occur through various mechanisms such as polyploidy or ecological specialization.
The correct statement suggests that sympatric speciation can occur rapidly, through a single reproductive event that results in the formation of a new species. This is possible when a genetic mutation or hybridization event leads to a reproductive barrier between individuals within a single population, allowing them to evolve separately from each other.
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Complete ques is:
Select the correct statement describing sympatric speciation.
Sympatric speciation can occur in a single generation.
Sympatric speciation is always initiated by geographic isolation of two populations.
Sympatric speciation has never been observed in nature.
Answer is Sympatric speciation can occur in a single generation.
Which one of the following mRNA processing events does not occur in the nucleus of human cells?
a. 5' cap addition
b. excision of introns
c. poly-A tail additions
d. splicing of exons
e. none of the above are correct. all of the events described above occur in the nucleus of human cells
Events that does not occur in the nucleus of human cells is D. splicing of exons , splicing of exons can continue in the cytoplasm after mRNA export.
In general , the splicing of exons will continue inside the cytoplasm after mRNA export, also most of the splicing occurs in the nucleus during mRNA processing.
While other two events - 5' cap addition and poly-A tail additions also takes place in the nucleus as part of the mRNA processing pathway, while excision of introns is another term for splicing, is considered as a nuclear event. Translation is the mRNA processing event that does not occur in the nucleus of human cells.
Hence, D is the correct option
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what type of fat contains an unusual bond that does not occur naturally?
Trans-fats contains an unusual bond that does not occur naturally but occurs as a result of an industrial process.
Trans-fats contain an unusual bond resulting from a industrial process called hydrogenation. These types of days are a kind of unsaturated fatty acids that possess hydrogen bonds on the opposite sides of the carbon atom unlike cis-fatty acids. This gives them a more linear structure. Usually unsaturated fatty acids lack a linear structure and are bent molecules.
Hydrogenation is the process of addition of hydrogen to the carbon-carbon double bonds in order to make them lose this double bond and become saturated. Moreover, hydrogenation process is also used to make trans-fats industrially. Trans-fats have an unusual shape due to partial hydrogenation often but have similar properties as those of saturated fats.
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Which of the following is NOT an example of External Noise?A. noise from vehicles
C. confrontation with a friend
B. singing at the neighbourhood
D. the dog barking
Confrontation with a friend is not an example of external noise.
External noise is defined as any sound that originates outside of a person's body and interferes with their capacity to hear or interpret other sounds or information. These external sounds are frequently unwelcome and can distract or interfere with a person's ability to focus or communicate successfully.
Environmental sounds such as traffic noise, construction noise, aeroplane noise, neighbourhood noises such as dogs barking or people singing loudly are examples of external noise, as are any other sounds that come from outside the person's body and can interfere with their ability to concentrate or communicate.
A confrontation with a buddy, on the other hand, is a social encounter that involves dialogue between two people. There are no external sounds to distract or interfere with dialogue. While a conflict might be distracting or stressful, it is not considered external noise because it does not originate in the individual's surroundings.
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There are multiple ways (portals) for pathogens to enter the body. Indicate which portals of entry are used for the gastrointestinal tract system. A Lotions, liquids, punctures, and scrapes B Sexual contact, moisture, punctures, and scrapes C Food, liquid, and other ingested substances
There are multiple ways (portals) for pathogens to enter the body. Indicate which portals of entry are used for the gastrointestinal tract system, Food, liquid, and other ingested substances. . the Correct option C )
The gastrointestinal tract (GI tract, digestive tract, alimentary canal) is the digestive tract or conduit that connects the mouth to the anus. In humans and other animals, the GI tract encompasses all of the major organs of the digestive system, including the esophagus, stomach, and intestines.
Food is processed in the mouth to extract nutrients and absorb energy, and the waste is ejected as feces at the anus. Gastrointestinal is an adjective that means or refers to the stomach and intestines.
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Full Question: There are multiple ways (portals) for pathogens to enter the body. Indicate which portals of entry are used for the gastrointestinal tract system.
A Lotions, liquids, punctures, and scrapes
B Sexual contact, moisture, punctures, and scrapes
C Food, liquid, and other ingested substances
describe how cell shape differs when the bladder is full and when the bladder is empty.
Answer:
Форма клітини сечового міхура зазвичай не змінюється в залежності від того, чи наповнений сечовий міхур чи порожній. Однак, коли сечовий міхур наповнений, він може розширюватись, що призводить до зміни форми сусідніх клітин.
Explanation:
Наприклад, якщо сечовий міхур наповнений, то його стінки можуть розширюватись, створюючи тиск на клітини слизової оболонки, що лімітує їхню форму. У цьому випадку клітини можуть здаватися меншими та більш компактними порівняно з клітинами, які знаходяться на стінках порожнього сечового міхура.
Отже, форма клітини сечового міхура не змінюється напряму, але може бути вплинута на розширення та зменшення розміру сечового міхура.
bacteria are growing exponentially in an environment of unlimited space and food. the doubling time is 1 hour.a. If there are initially x milligrams of bacteria, express the mass of the bacteria as a function of time t.
b. Use your answer to (a) to write down an equation whose solution is the time at which there are 3x milligrams of bacteria.
c. Solve your equation from (b).
We can find that t ≈ 1.585 hours. Therefore, it will take approximately 1.585 hours for the mass of bacteria to reach 3x milligrams.
What is Bacteria?
Bacteria are a diverse group of single-celled microorganisms that are found in almost every environment on Earth. They can be found in soil, water, air, and living organisms. Bacteria come in a wide variety of shapes and sizes, and they can be classified into different groups based on their physical and biochemical characteristics.
Bacteria play important roles in various natural and artificial processes, such as nutrient cycling, decomposition, fermentation, and bioremediation. Some bacteria are also pathogenic and can cause infections in humans, animals, and plants.
a. Let M(t) be the mass of the bacteria at time t. Initially, at t = 0, the mass of bacteria is x milligrams. We know that the bacteria are growing exponentially with a doubling time of 1 hour. Therefore, the mass of bacteria can be expressed as:
[tex]M(t) = x * 2^{(t/1)} = x * 2{^t}[/tex]
b. To find the time at which there are 3x milligrams of bacteria, we can set M(t) = 3x and solve for t:
[tex]M(t) = x * 2^t = 3x[/tex]
[tex]2^t = 3[/tex]
t = log2(3)
c. Using a calculator, we can find that t ≈ 1.585 hours. Therefore, it will take approximately 1.585 hours for the mass of bacteria to reach 3x milligrams.
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what is caviar blind taste test
You'll find that most caviar will have a slight saltiness accompanied by a mild fishy taste. As expected, the taste of caviar tends to resemble ocean water. Besides a mild and fresh taste, quality caviar will also have an unexpected buttery richness that delights the tastebuds.
The roe variety includes caviar. The term "roe" refers to fish's unfertilized eggs, which are among the most scrumptious, intriguing, and beautiful fish eggs in existence. Mother of pearl serving spoons are a wonderful alternative to metal serving spoons, which are known to taint the taste, and are frequently used to serve caviar in a dish on top of a bed of crushed ice.
It's customary to let diners serve themselves caviar from a tray onto toast points and Russian pancakes, called blini. Other toppings like onion, chives, and crème fraiche are frequently served with them.
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brain injury, a soldier is now unable to speak. What area of the brain was most likely damaged?
A) Hippocampus B) Broca's area C) Posterior portion of occipital lobe D) Basal nuclel
The area of the brain that was most likely damaged in a soldier who is unable to speak after a brain injury is:
B) Broca's area.
Broca's area, also known as the motor speech area, is a region of the brain in the frontal lobe that is responsible for speech production. Damage to this area can cause Broca's aphasia, a condition characterised by difficulty producing speech, slow and halting speech, and difficulty forming sentences.
In most people, Broca's area is located in the left hemisphere of the brain and is linked to other areas of the brain involved in language processing, such as Wernicke's area, which is responsible for understanding language.
While the other brain regions mentioned (hippocampus, posterior occipital lobe, and basal nuclei) are important for different functions such as memory formation, vision processing, and movement control, they are not directly involved in speech production.
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Which of the following statements is/are correct concerning the importance of One Health in Global Health? their can be one answer or more than one! will mark brainlist if correct!!!!!!!!!!!! I MEANT TO PUT THIS UNDER HEALTH
A. The so called weak spot in the cycle of transmission of a zoonotic infection is always at the human level
B. Vaccinating humans is more cost-effective for tackling zoonotic diseases such as rabies or MERS-CoV
C. One Health brings vets and zoologists more prominently to the Global Health arena
D. The One Health approach is key to address Global Health challenges at the human-animal-ecosystem interface such as emerging zoonotic diseases
E. Epidemiological investigations based on the One Health approach analyse comprehensively the cycle of transmission of an infection to identify the so called weak spot of the system
B, D, and E are correct concerning the importance of One Health in Global Health.
What is Global Health?Global health is a field of health focused on improving the health of people worldwide. It looks at the health of populations and how health systems work, paying special attention to the most vulnerable populations. It examines how global issues such as poverty, disease, environmental degradation, and international conflict affect the health of people. Global health looks at how different cultures and countries approach health, how health problems are addressed, and how health systems are developed, funded, and improved.
Vaccinating humans is more cost-effective for tackling zoonotic diseases such as rabies or MERS-CoV. The One Health approach is key to address Global Health challenges at the human-animal-ecosystem interface such as emerging zoonotic diseases. Epidemiological investigations based on the One Health approach analyse comprehensively the cycle of transmission of an infection to identify the so called weak spot of the system.
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What is a scientific system?
The scientific naming system given to living organisms is known as binomial nomenclature. This scientific nomenclature system of classification gives each organism a genus and species name.
What do you mean by scientific classification?A system is a set of things that are interconnected in a way that leads to recognizable patterns of behavior over time. Systems science is an interdisciplinary field that studies the complexity of systems in nature, society or another discipline.
It is "the art and science of creating complete solutions to complex problems", such as signal processing systems, control systems and communication systems, or other advanced forms of modeling and design in certain engineering fields.
The classification of majors in systems science includes general systems theory, cybernetics, systems engineering, operations research, and systems analysis.
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When several EPSPs arrive at the axon hillock from different dendritic locations, depolarizing the postsynaptic cell to threshold for an action potential, this is an example of
A) temporal summation. B) spatial summation.
C) tetanus.
D) the refractory state.
E) an action potential with an abnormally high peak of depolarization.
B.spatial summation. When enough neurotransmitter is released to trigger an action potential in a spinal cord (postsynaptic) neuron, spatial summation occurs.
This is when progressively more primary afferent (presynaptic) neurons are activated simultaneously. The phrase is also used to refer to the increase in reaction brought on by stimulating larger regions or larger volumes of body tissue. As a result, this component causes pain to become more severe. The reaction that happens when multiple geographically distinct visceral receptors are simultaneously activated in the setting of nocifensive behaviours is known as spatial summation. The generation of nocifensive behaviours normally requires a wider area of tissue to be activated than would be necessary in other tissues since the viscera are typically less densely innervated than most other tissues (such as skin).
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are all skittles have the same flavor?
Despite the fact that Skittles come in a variety of colors and scents, it is not necessary that they all have the same flavor.
There is a lot of discussion online over whether Skittles genuinely have many flavors or whether their color and aroma are deceiving us.
When it comes to tasting the rainbow, we all have our favorite hues. A rational person would naturally order the colors red, green, purple, orange, and yellow from best to worst. Yet some scientists contend that it's all a giant deception by the candy makers. We might be getting ripped off since producing candies with unique colors and scents is less expensive than producing ones with real flavour.
In an effort to understand how the senses interact and influence one another, scientists are now studying the phenomena.
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messages occur when a neuron fires after neurotransmitters reach the of a neuron. True or False?
It is false that messages occur when a neuron fires after neurotransmitters reach the of a neuron.
Messages do not occur when a neuron fires. Messages occur when neurotransmitters reach the receptor sites of a neuron. Receptor sites are located on the surface of the neuron. When neurotransmitters bind to the receptor sites, they cause a change in the electrical charge of the neuron. This change in electrical charge is what triggers the neuron to fire and send an electrical signal to other neurons. The electrical signal is the message. Messages occur when a neuron fires after it receives an electrical signal from another neuron.
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how did the rate of co2 production change as the temperature was raised
As the temperature was raised, the rate of CO2 production increased.
This is because an increase in temperature increases the rate of reaction, which increases the rate of production of CO2. As the temperature increases, the molecules in the reaction move faster, collide more often, and react more quickly, leading to a higher rate of production of CO2.Carbon dioxide (CO2) is a naturally occurring gas that is released into the atmosphere as a result of natural processes such as respiration and volcanic eruptions. However, human activities such as burning fossil fuels and deforestation are the main sources of increased CO2 production.
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are there many or few acetyl molecules attached to the genes associated with histones?
There are few acetyl molecules attached to the genes associated with histones.
DNA is a very long molecule wrappee around the proteins called histones. The whole unit consisting of 8 histone proteins and DNA strands, or chromatin, wrapped around is what we call a nucleosome. Thus nucelosome is the repeating structural unit of DNA packaging in eukaryotes. Binding of acetyl groups to the DNA makes it more prone to transcription as the binding is lose. The process of acetyl binding is called acetylation.
When acetyl molecules are attached to the genes associated with the histones, this is termed as histone acetylation. This process results in the charge neutralization and seperation of DNA molecules from the histones. Thus, as a result, the nucelosomal DNA becomes more accessible to the transcription factors.
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Why are dissolved oxygen concentrations higher in the surface ocean than in the deep ocean at both high and low latitudes?A. photosynthesis by phytoplanktonB. respiration by fish and other marine organismsC. surface water temperatures are colder at high latitudesD. the relative concentrations of the major ions in seawater does not change.
Oxygen content is most marked at the surface for two real reasons; this is where oxygen rots into the sea from the domain, and the surface water is where oxygen is born by phytoplankton through photosynthesis. The correct answer is (A).
The surface salinities are higher than the deepwater salinities in the lower scopes in light of the fact that in these subtropical districts, there is broad dissipation at the surface, however, the precipitation amount is very low.
Right now there is around 60 fold the amount of carbon dioxide (CO2) disintegrated in the sea as in the environment. Since CO2 consolidates synthetically with water to frame a powerless corrosive (H2CO3, carbonic corrosive), water can hold maybe multiple times more carbon dioxide than one or the other nitrogen or oxygen at immersion.
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4. Different cell types may have very different appearances but the same genetic material. What accounts for these differences?
The differences in appearance between different cell types with the same genetic material are due to the differences in gene expression.
What is gene expression?
Gene expression is the process through which a gene's information is used to create a functioning gene product, allowing it to produce end products like proteins or non-coding RNA and ultimately have an impact on phenotypes.
All cells in an organism contain the same genetic material, which includes the DNA that encodes the instructions for building all the proteins and structures required for cellular function. However, not all of the genes in a given cell are active or expressed at the same time resulting in differences in the appearance and functions of cells.
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