A protein can have anywhere from 50 to thousands of amino acids, with a typical protein comprising about 300 amino acids.
The order of the amino acids in the protein chain and the quantity of chains in the protein both affect how many amino acids are present in a protein.
A tiny protein, for instance, could only have one chain with 50 amino acids, but a bigger protein might have numerous chains with several hundred amino acids apiece.
Additionally, certain proteins may contain other components like nucleic acids, lipids, metals, or carbohydrates that may have an impact on the overall amount of amino acids found in a protein.
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Mammals that live in the Arctic Ocean have a large amount of blubber, which is a fatty tissue just beneath the skin.
Which statement best relates why these animals have so much blubber?
Lipids in blubber insulate the animals from cold water.
Proteins in blubber help the animals move to stay warm.
Carbohydrates in blubber provide all the energy that the animals need to stay warm.
Nucleic acids help build the lipids in blubber, which keep animals warm by regulating cell activities
Answer:
Mammals that live in the Arctic Ocean have a large amount of blubber, which is a fatty tissue just beneath the skin. Which statement best relates to why these animals have so much blubber? Lipids in blubber insulate the animals from cold water.
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If the potato is allowed to dehydrate by sitting in open air, would the cells absorb more or less water? Explain.
If a potato is allowed to dehydrate by sitting in open air, its cells would absorb less water, because dehydration occurs when the potato loses moisture to the environment, causing the cells to lose water content.
The loss of water from the potato cells creates a higher concentration of solutes inside the cells, leading to a lower water potential. In such a situation, if the potato were to be placed in a solution with a higher water potential, the water would naturally move from the higher water potential to the lower water potential, this process is known as osmosis. However, due to the potato's dehydration, the difference in water potential between the cells and the surrounding solution would be smaller, resulting in a reduced rate of osmosis and lesser water absorption by the potato cells.
Moreover, the loss of water from the cells during dehydration can cause the cells to become flaccid, leading to a less efficient uptake of water. Overall, a dehydrated potato would absorb less water than a fully hydrated one due to changes in water potential and cell structure.
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When growing cultures, the agar is ________ to separate pathogenic colonies of organisms from colonies of normal flora.
When growing cultures, the agar is inoculated to separate pathogenic colonies of organisms from colonies of normal flora.
Antibiotic susceptibility testing (AST) specifies effective antibiotic dosage and helps in therapy and proper management of an individual patient's health against deadly infections. Antibiotic susceptibility testing is often essential in order to determine which antibiotics to use against a specific strain of bacterium.
Hence, Agar is an ideal solidifying agent for microbiological media because of its melting properties and because it has nutritive value for the vast species of bacteria.
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the main problem with the fat replacer olestra is that it can bind? a. cholesterol and reduce its absorption.
b. the fatty acids and reduce their absorption.
*c. the fat-soluble vitamins and reduce their absorption.
d. fiber and reduce its absorption.
The main problem with the fat replacer olestra is that it can bind c. the fat-soluble vitamins and reduce their absorption.
Olestra, also known as Olean, is a fat substitute used in certain food products as a calorie-reducing ingredient. It is a synthetic compound that mimics the properties of fats but is not digested or absorbed by the body.
One of the concerns associated with olestra consumption is its ability to bind to fat-soluble vitamins, including vitamins A, D, E, and K. Fat-soluble vitamins require the presence of dietary fat for proper absorption in the intestine. However, olestra can bind to these vitamins in the gastrointestinal tract and prevent their absorption.
Because olestra is not absorbed by the body, the bound fat-soluble vitamins cannot be released and utilized. This can result in reduced absorption of these important vitamins, which are essential for various bodily functions, including vision (vitamin A), bone health (vitamin D), antioxidant activity (vitamin E), and blood clotting (vitamin K).
To address this concern, manufacturers often fortify olestra-containing products with fat-soluble vitamins to compensate for the potential reduction in absorption. However, the binding effect of olestra on fat-soluble vitamins remains a significant drawback and consideration when consuming products containing this fat replacer.
Therefore, the main problem with the fat replacer olestra is its ability to bind fat-soluble vitamins and reduce their absorption, as stated in option c.
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Pls help with this !!!!!!
propose an evolutionary hypothesis to explain the observation that some bird populations do not migrate if people supply food for them in feeders.
Evolutionary hypothesis to explain the observation that some bird populations do not migrate if people supply food for them in feeders suggests that the birds do not migrate have a better chance of survival and are more likely to pass on their traits to their offspring.
Evolutionary hypothesis is the idea that the traits of organisms develop and become more widespread over time through the process of natural selection, and that these changes can lead to the emergence of new species over time. The observation that some bird populations do not migrate if people supply food for them in feeders can be explained by the principle of natural selection. Birds that do not migrate but live in regions with cold and snowy winters can get access to food provided in feeders by humans, which can help them survive through the winter. This adaptation makes it possible for these bird populations to remain in their region, even when it is not feasible for other bird populations to survive.
Over time, as the bird population becomes more adapted to the conditions of the winter, they may develop other changes that help them survive better in these conditions. For example, they may become better at storing food, better at finding food in the snow, or more resistant to cold weather. This adaptation process can eventually lead to the development of a new bird species that is well adapted to living in cold and snowy regions. Thus, this evolutionary hypothesis suggests that the birds that remain in their region and do not migrate have a better chance of survival and are more likely to pass on their traits to their offspring, leading to the development of a new species that is adapted to living in cold and snowy conditions.
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Proteins in the cell membrane have many functions. Which type of protein would be used for cell recognition and as a receptor? A. Pore proteins B. Endoplasmic proteins C. Glycoproteins D. Integral proteins
Answer:
C. glycoproteins
Explanation:
Glycoproteins are proteins containing glycans (oligosaccharide carbohydrates) attached to amino acid side chains. These oligosaccharides are attached to the amino acid chain by a posttranslational modification referred to as glycosylation, a modification generally found in extracellular regions. Glycosylation refers to the chemical reaction in which a glycosyl donor (i.e., the carbohydrate) is attached to a functional group in the protein. The glycosylation sites play distinct functional roles for both cell interactions and cell recognition. Moreover, glycosylation sites are also essential for substrate recognition by an enzyme. For example, secreted cytokines are glycosylated, which is required for their binding to receptors.
Complete the food chain below. Fill in each circle with one of the organisms in Word Bank A. Next,
identify the role of each type of organism in the food chain by writing a label from Word Bank B on
the lines below the circles. Then, use the percentages in Word Bank C to show how much energy
is transferred to each organism on the lines above the circles.
Word Bank A:
Word Bank B:
Word Bank C:
bird
big fish
decomposers
decomposers herbivore
10%
small fish
primary producer
100%
algae
carnivore
0.1%
1%
The food chain for the ecosystem is;
primary producer -------> herbivore -------> Decomposer -----> Algae
What is food chain?The term food chain has to do with the movement of energy across the ecosystem. Let us recall that the ecosystem is a self sustaining unit in which there is an exchange of materials and energy. This implies that there must be a transfer of energy between the living and the non living parts of the ecosystem. The living parts of the ecosystem are the plants and the animals while the non living parts of the ecosystem are the climatic and the edaphic factors in the ecosystem.
Having said this, we are now to fil in the food chain. The food chain shows the relationship between the organisms in an ecosystem. It then follows that there is a 10% drop in energy as it is passed on from one trophic level to the next.
The food chain therefore is;
primary producer -------> herbivore -------> Decomposer -----> Algae
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Which structures are found only in plant cells, not in animal cells?
- [ ] A and B
- [ ] B and C
- [ ] C and D
- [ ] D and A
Answer:
answer is b and c
Explanation:
they have different cells, and chloroplast is only in plant cell
Vocabulary Review and Reinforcement
In 1-13, study the diagram. Then fill in the blanks with the appropriate terms from
the chapter
1.
2.
3.
4.
5.
6.
7.
8.
9.
*I NEED ANSWERS ASAP*
The cell in the diagram is a plant cell because it has chloroplasts and a cell wall.
There are two types of cells animal cells, which are the ones that humans and animals have, and plant cells, which are the ones that plants and trees have. They share some organelles, but they also have some that are specific to each type.
The plant cell parts in the picture are:
Rough Endoplasmic Reticulum: it is where the ribosomes are. The synthesis of proteins happens there.Chloroplast: it is an organelle-specific of plant cells. They are in charge of photosynthesis.Cell wall: it is only present in plant cells. It surrounds the membrane.Mitochondria: It is the place that generates the energy that the cell needs.Vacuole: they are bigger in cell plants than in animal plants. It has many functions, but one is to store water.Membrane: it draws the limits of the cell.Golgi Apparatus: it is the place where proteins go to be distributed.Nucleus: it contains DNA, and it has a membrane around it.The nucleolus: is the larger part of the nucleus. It is in contact with the endoplasmic reticulum.To sum up, the plant cell has a bigger vacuole than the animal cell; it also has chloroplasts and a cell wall, which are not present in the animal cell.
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Which of the following is a challenge in maintaining tree plantings or native meadows “no mow zones?” Choose all that apply.
If left unattended, non-native plants can take over the area and kill the native plants
If left unattended, non-native plants can take over the area and kill the native plants
Deer can eat young trees if a tree does not have a proper deer guard tube installed.
Deer can eat young trees if a tree does not have a proper deer guard tube installed.
Native trees and native plants in no-mow zones need to be watered each day for two years.
Native trees and native plants in no-mow zones need to be watered each day for two years.
Native trees and native plants in no-mow zones need to be regularly fertilized.
Answer:
most likely B and you know why? native plants are more dangerous!!!
Explanation:
yes that is my explanation, i learned this in like middle school.
If left unattended, non-native plants can take over the area and kill the native plants. Thus, the correct option is A.
What is no mow zone?A “no mow zone” is refer as a designated section of land purposely not mowed in order to encourage native plant species growth. If left alone for a century or longer, the lawn will transform into a forest.
Low mow zones are ideal habitats for small animals and insects and become rich with species.
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Protein metabolism is difficult because.......
Group of answer choices
fad diet products are expensive; exercise is free!
the proteins shape can change
nitrogenous wastes like ammonia and urea build up.
ATP cannot be made from protein.
proteins contain 9kcal/gram.
Protein metabolism is difficult because nitrogenous wastes like ammonia and urea build up. This is the answer. A long answer is given below.
Protein metabolism is one of the most complex processes carried out by living organisms because it includes the breakdown of amino acids and their conversion into other amino acids, sugars, fats, and other metabolic intermediates. The products of protein metabolism, which include nitrogenous wastes like ammonia and urea, are potentially toxic and must be removed from the body. The liver is responsible for metabolizing the nitrogenous wastes produced by protein metabolism, which are excreted by the kidneys.
If the liver or kidneys are damaged or functioning poorly, the buildup of nitrogenous wastes in the bloodstream can lead to serious health issues. Additionally, the energy required for protein metabolism is higher than that required for other types of metabolism, as proteins contain 9 kcal/gram of energy, compared to 4 kcal/gram for carbohydrates and fats. Therefore, the body must expend more energy to break down and metabolize protein. Finally, ATP cannot be made from protein, as it can from carbohydrates and fats, which are more efficient energy sources. As a result, the body must use protein to make glucose or fatty acids, which can then be used to produce ATP.
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describe the movement of sodium and potassium across the cell membrane and the creation of a membrane potential or voltage.
Sodium ions and potassium ions leak slightly during resting potential. Because sodium diffuses from the outside, where it is more concentrated, to the interior, potassium diffuses in the opposite direction, because it is more concentrated inside the neuron.
Protein channels and protein pumps transfer potassium and sodium across the cell membrane. Passive transport is facilitated by protein channels. They, like tunnels, allow materials to flow from a high concentration area to a low concentration area without expending energy.
As a result, after a few potassium ions have moved out of the cell, the cell will have an excess of negative charge, whilst the surrounding solution will have an excess of positive charge, resulting in a potential difference.
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According to darwin theory of evolution all species on earth are united by a what
Answer:
common ancestors
Explanation:
hi I dont really have an explanation to the answer, but here you go!
A decrease in metabolism without a similar, compensatory decrease in alveolar ventilation will have what effect on the systemic pH
Answer:
The PH will increase
Explanation:
Once assembled, what is the key to a protein's unique function?
Answer:
Once assembled, what is the key to a protein's unique function? The manner in which proteins fold is the key to their function
The endoplasmic reticulum is an important region where protein folding occur. Because proteins need to be appropriately folded into distinct structures, this is an essential biological function.
What is importance of protein folding?Proteins that are misfolded or are unfolded improperly impart to the pathophysiology of many illnesses.
Protein folding is a highly delicate process that is regulated by a variety of external stimuli, such as temperature, pH, chemicals, molecule crowding, electric and magnetic fields, and temperature.
These elements affect a protein's capacity to fold into the appropriate functional forms.
Therefore, Protein folding give unique properties to protein functions.
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Explain why chloroplasts are found only in plant cells?
Answer:
Explanation:
Chloroplasts are found in plant cells only because chloroplasts contain chlorophyll which is essential for photosynthesis. Chlorophyll traps sunlight and uses it to prepare food for plants by the process of photosynthesis.
Answer:
chloroplast are only found in plant cell because
it contain chlorophyll which is useful in making good for plants by trapping sunlight from
sun .
But animal don't need to make food so. they don't contain chloroplast in their cell
hope it helps
Where does the energy come from to make NADPH in the light reactions?
A. From the potential energy of ADP molecules
B. From the energy stored in light
Ο Ο Ο Ο
C. From the energy stored by the Calvin cycle
D. From the energy released by ATP molecules
Answer:
C Is biomass in the rainforest an energy source or energy sink
Explanation:
Answer:
B. From the energy stored in light.
Do Monterey cypress trees grow along the coast of California with most of their branches?
Yes, Monterey cypress trees (Cupressus macrocarpa) typically grow along the coast of California with most of their branches.
These evergreen trees have an upright and conical shape, and their branches tend to be concentrated towards the outer edges of the tree. This growth pattern is an adaptation to the coastal environment where these trees thrive.
The coastal conditions, including strong winds and salty air, influence the growth of Monterey cypress trees and contribute to the development of their characteristic branch arrangement. The outer branches help to reduce wind resistance and allow the tree to withstand the coastal elements.
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Two different elodea leaves were placed in solutions. Solution A used tap water (1% salt and 99% water) while Solution B used salt water (6% salt and 94% water). Elodea normally contains 1% salt. What likely happened to the elodea?
Answer:
Solution A-It will likely swell up since you put it in a hypotonic solution
Solution B- Since you placed it in a hypertonic solution, its gonna shrivel up and become smaller
Explanation:
Solution A- Placing Elodea cells into 100% water, which is more hypotonic than freshwater, also causes water movement into of the cells resulting in the swelling of the cells. ... As water moves out of the cells there is a loss of turgor pressure and the plasma membranes detach from the cell walls as the cells shrink.
B- When the Elodea was placed in the salt solution, the vacuoles disappeared and the protoplasm came away from the cell wall making the organelles appear to be clumped in the middle of the cell. ... Therefore, if it were placed in a hypertonic solution it would lose water and shrivel.
Hope this helps! Brainliest??Anyways have a great day my loves<3
(havent I already answered like 5 of your questions? lol)
Answer:
Was the answer above right? Because I need the answer!!
Explanation:
asap plzzzz help I will give brainliest
Answer:
The first letter of after replication
Explanation:
Everything else is the same except for the first letter
Hope this helps :)
What does the term 'CFU' mean in relation to enumeration techniques?
a. colony form unusual
b. colony forming unit
c. can't form unless
d. couldn't form (as) usual
e. class frequently undecided
The term 'CFU' stands for 'colony forming unit' in relation to enumeration techniques. This term refers to the unit of measurement used to quantify the number of viable microorganisms in a given sample.
CFUs are counted by observing the number of visible colonies that form on a growth medium after incubation. This method is widely used in microbiology to estimate the concentration of microorganisms in a sample and is particularly useful for quantifying bacteria and fungi that can grow on solid media.
The term 'CFU' in relation to enumeration techniques stands for "colony forming unit." It is a measure used in microbiology to estimate the number of viable microorganisms, such as bacteria or yeast, present in a sample. In this context, viable means that the microorganism is capable of reproducing and forming a visible colony.
Enumeration techniques, like the spread plate or pour plate methods, involve diluting and spreading the sample on agar plates, allowing the microorganisms to grow into distinct colonies. Each colony represents one CFU, which can be counted and used to calculate the original concentration of microorganisms in the sample. Therefore, the correct answer is option b. "colony forming unit."
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The stoneflies in the food chain are
they are formidable carnivores and are primary carnivores
Think of a scenario where wolves are introduced to an island where elk live. This elk population has not been in contact with wolves for thousands of years. Which of the following is most plausible. a. The carrying capacity and "r" of the elk population will increase. b. There is an evolutionary arms race, where elk evolve defenses as wolves continue to evolve to overcome those defenses. c. The wolf population will not persist more than a year because the elks are not accustomed to reacting to wolf predators. d. Elk behavior will not change in any way. e. The survivorship of elk increases.
When wolves are introduced to an island where elk live, then "an evolutionary arms race will occur, where elk evolve defenses as wolves continue to evolve to overcome those defenses" because, wolves are natural predators. Thus, the correct option is B.
What is the plausible effect?Wolves are a natural predator of elk. The introduction of wolves to an island where elk have lived for thousands of years will result in an evolutionary arms race, in which elk evolve defenses to protect themselves from the new predators.
The carrying capacity and "r" of the elk population will not increase, and the wolf population will persist for more than a year because elks will adapt to the new threat, or the less fit elk individuals will be removed from the population, resulting in changes in the population structure. Elk behavior will also change in response to the new threat, and survivorship may increase for individuals that develop stronger defenses.
Therefore, the correct option is B.
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Microorganisms that are only found associated with our body on a temporary basis are known as:___.
Microorganisms that are only found associated with our body on a temporary basis are known as Skin Microflora.
What is the role of microbes on the skin?
Skin microflora is bacteria that live on human skin.
Microflora is sometimes referred to as the skin microbiota or the skin microbiome. There are many microbes – the overall number of microbial cells in and on our bodies is comparable to the number of human cells. The skin has the highest concentration of germs after the stomach.Bacterial species are by far the most abundant nevertheless, fungi, viruses, and mites can also be found on typical healthy human skin. The resident microbiota is found in the upper layers of the epidermis and clusters in and around hair follicles.
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pepsin hydrolyzes proteins in the stomach. the ph in the stomach is 2, and the optimum ph for pepsin is 2. what do you think would happen to the activity of pepsin when it reaches the small intestine, where the ph is 8? explain why.
The activity of pepsin would gradually decreases when it is exposed to higher pH in the small intestine. This is because in higher pH the enzyme pepsin denatures.
What is the role of pepsin in the stomach?The role of Pepsin in the stomach is determined by the fact that it serves to digest proteins found in ingested food. The Gastric chief cells typically secrete pepsin as an inactive zymogen called pepsinogen.
Parietal cells within the stomach lining effectively secrete hydrochloric acid that ultimately decreases the pH of the stomach. A low pH (1.5 to 2) activates pepsin.
It is thought that the role of pepsin is better played in the pH lies between 1.5-2. But when pepsin enters the region of the small intestine, the pH gradually increases and reaches 8. At this, the activity of pepsin is inhibited due to its denaturation.
Therefore, the activity of pepsin would gradually decrease when it is exposed to higher pH in the small intestine. This is because in higher pH the enzyme pepsin denatures.
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Which group of crickets reproduced more? Why did they reproduce more?
The difference in courtship songs likely serves as a behavioral reproductive isolating mechanism when the populations come in contact. Option A is correct choice.
If three populations of crickets look very similar but have different courtship songs, the difference in song is likely to serve as a behavioral reproductive isolating mechanism when the populations come in contact.
The variation in courtship songs functions as a behavioral barrier that prevents or reduces interbreeding between the populations. Male crickets use their songs to attract females for mating.
When populations with different songs come into contact, the females are more likely to respond to and mate with males from their own population, as they are genetically predisposed to recognize and be attracted to specific song patterns.
His behavioral reproductive isolation helps maintain reproductive boundaries between the populations, leading to limited gene flow and promoting the development of distinct cricket populations over time.
It contributes to the formation of reproductive barriers and eventual speciation, as differences in courtship songs become a key factor in mate choice and reproductive success.
Option A is correct choice.
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Question:-
Three populations of crickets look very similar, but the males have courtship songs that sound different. What function would this difference in song likely serve if the populations came in contact?
A) a behavioral reproductive isolating mechanism
B) a temporal reproductive isolating mechanism
C) a gametic reproductive isolating mechanism
D) a postzygotic isolating mechanism
HELP MEEEE PLS Hydroelectric power is produced using the energy of moving water.
Which description tells how this process is accomplished?
A Water flowing upstream is help in a reservoir behind a dam. The water moves up through channels in the dam where it flows past turbines, moving them and creating electricity.
B Water flowing upstream moves through a channel in a dam. The water moves though a generator that produces electricity, and then it moves to a reservoir.
C Water flowing downstream is held up in a reservoir behind a dam. Some water moves down channels through turbines connected to generators which produce electricity.
D Water flowing downstream moves through a reservoir in a dam and past turbines. It then moves through channels and cause a generator to produce electricity.
Answer:
C Water flowing downstream is held up in a reservoir behind a dam. Some water moves down channels through turbines connected to generators which produce electricity
Explanation:
Good explanation.
Answer: hi
Explanation:
Individuals with high blood pressure are at a higher risk for:OOOOstrokeaneurismheart attackAll of these choices are correct.
High blood pressure can place increased pressure on the walls of the blood vessels inside the brain, increasing your chances of developing an aneurysm. Also, it forces the heart to work harder to pump blood to the rest of the body. This causes the lower left heart chamber (left ventricle) to thicken. A thickened left ventricle increases the risk of heart attack, heart failure and sudden cardiac death. Moreover, blood vessels damaged by high blood pressure can narrow, rupture or leak. High blood pressure can also cause blood clots to form in the arteries leading to the brain, blocking blood flow and potentially causing a stroke.
So the correct answer is: All of thees choices are correct.
Which is an internal environmental factor that affects heredity?
light
temperature
nutrition
hormones
Answer:
Hormones
Explanation:
I may be wrong but I believe this is the answer as hormones occur within the herd, whereas the others occur outside
Answer:
The answer is D-hormones
Explanation: