PLEASE HELPPPPPPPPPP!!!!!!! Explain how ATP and ADP act as allosteric regulators of enzymes that are responsible for ATP production, and how that is an example of feedback inhibition.

Answer:

stomata is the substance that helps to minimize water loss.

The plant wax will surely helps this organism to minimize water loss from all its leaves.

The plant wax is a compound composed of different chemical substances (e.g., hydrocarbons, alcohols, ketones, etc).

In conclusion, the plant wax will surely helps this organism to minimize water loss from its leaves.

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The given statement "tetrodotoxin (TTX) resistance in snakes originated as a mutation in the nucleotide sequence of a gene that codes for sodium channels in their skeletal muscles" is True. Tetrodotoxin is a potent neurotoxin found in certain animals, such as pufferfish, and is known to block voltage-gated sodium channels in nerves and muscles.

In some snake species, particularly those that prey on toxic animals like the pufferfish, the ability to resist TTX is crucial for survival. These snakes have evolved a resistance to TTX by developing mutations in the genes encoding their sodium channels. Specifically, the mutation occurs in the gene that codes for the α-subunit of the voltage-gated sodium channel (Nav1.4) in skeletal muscles. As a result, it can cause paralysis and even death in many organisms.

The mutation leads to a change in the amino acid sequence of the sodium channel protein, which in turn alters its structure and function. This alteration reduces the binding affinity of TTX to the channel, making it less sensitive to the toxin and allowing the snake to survive despite ingesting a TTX-containing prey.

This evolutionary adaptation provides a significant advantage for these snakes, as it enables them to exploit a niche in their environment by feeding on toxic prey without suffering the lethal effects of TTX. In summary, TTX resistance in snakes is a result of a mutation in the nucleotide sequence of a gene coding for sodium channels in their skeletal muscles, enabling them to survive in their unique ecological niche.

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Answer:

EFFECTS - : Melting glaciers and icebergs release fresh water and reduce the salinity of the surrounding sea. The seawater also becomes less dense, changing patterns of ocean currents.

Explanation -

MELTING OF ICE AND ADDING WARM FRESH WATER TO NORTH ATLANTIC OCEAN -:  As part of the thermohaline circulation (also called the Global Ocean Conveyor), seawater flows through the Atlantic, the normal pattern by which seawater passes to the oceans of the world. Due to variations in water density caused by differences in temperature and salinity, the water in the Global Ocean Conveyor circulates. Colder water is denser than colder water, while salter water is denser than fresh water or less salty water.

Water heated at the Equator flows north to cold high latitudes at the surface of the ocean, where it becomes colder. When it cools, the deep ocean becomes denser and sinks. To take its place, more warm surface water flows in, cools, sinks, and the pattern continues. But this trend may be modified by melting Arctic sea ice.

The influx of freshwater from the melting ice makes seawater less salty and thus less thick at high latitudes as the Planet begins to warm and Arctic sea ice melts. In reality, data shows that over the past few decades, the North Atlantic has already become fresher.

Answer:

Salinity changes in water

Explanation:

False. Symbiotic relationships between sponges and other creatures can still be important despite their lack of tissue-level organization.

Although sponges lack tissue-level organization, they can still form symbiotic relationships with other organisms. Sponges often host various microorganisms, such as bacteria and algae, within their bodies. These symbiotic relationships can be mutually beneficial.

For example, certain bacteria living in sponges can help with nutrient uptake and provide protection against harmful microorganisms.

Additionally, some sponges have symbiotic relationships with larger organisms, such as shrimp or fish, which find shelter and food among the sponge's structure. These relationships highlight the ecological significance of sponges and demonstrate that symbiosis can occur even in organisms without tissue-level organization.

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Answer:

A) Homologous chromosomes line up at the cell equator.

B) Crossing over can occur during synapsis.

G) The chromosome number is reduced from 2n to n.

Explanation:

Potassium (K)

Metal.

19 Protons, 20 Neutrons, 19 electrons

Alkali Metals

Sodium is an element in the periodic table which is a metal as it has a net positive charge. The valency of this element is +1. It can donate an electron to achieve the octet and hence stability.

Chemical elements are the substances which cannot be decomposed into further simpler substances by any ordinary chemical process. These are presented in the periodic table on the basis of their atomic number.

Sodium is an element which belongs to the alkali metals family. Sodium element can be denoted by the symbol Na. The element is a metal as it has a net positive charge. It can donate one electron from its valency shell to achieve the octet which gives it stability. Therefore, the valency of the element is 1. The element has 11 protons, 11 neutrons and 11 electrons.

This can be represented as: ¹¹Na₂₂

where, Na is the symbol of sodium

11 is the atomic number = number of protons in the element

22 is the atomic mass = number of protons+ number of neutrons in the element.

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Answer:

Energy is the ability to do work. ... The energy of the sun is first captured by producers (Figure below), organisms that can make their own food. Many producers make their own food through the process of photosynthesis. The "food" the producers make is the sugar, glucose.

Explanation:

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As we can see in the punnet square we have a recessive homozygous and a dominant homozygous, in the possible combinations that can have the offspring, that is to say the letters inside square we can see that all are heterozygus, e

Answer:

Oxygen

Explanation:

Plants produce oxygen as a bi-product during photosynthesis.

The most likely conclusion for the identity of the gas in the bubbles is oxygen. Thus, the correct option for this question is B.

The most probable explanation for this question is the process of photosynthesis. When elodea is exposed to sunlight along with the water which is filled, the bubbles are produced. This reveals the extension of the photosynthesis process through which oxygen is derived as a product.

According to the question, photosynthesis may be defined as a type of process through which green plants and other photosynthetic algae synthesize their own food in the form of glucose with the help of carbon dioxide and water in the presence of sunlight.

As photosynthesis takes place, elodea plants pass the produced oxygen from leaves to the stem. Some oxygen escapes from the leaves to form oxygen bubbles in the water but the majority escapes from the stem as a result of larger intracellular air spaces.

Therefore, the most likely conclusion for the identity of the gas in the bubbles is oxygen. Thus, the correct option for this question is B.

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Answer:

It has an optimum pH of about 1.5. Trypsin's optimum pH is about 8.

Explanation:

This active trypsin acts with the other two principal digestive proteinases — pepsin and chymotrypsin — to break down dietary protein into peptides and amino acids. These amino acids are essential for muscle growth, hormone production and other important bodily functions.

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The correct option is B -Terrestrial insects−−uric acid.

The species that is incompatible with the main sort of nitrogenous waste it excretes is an insect that lives on land. The correct response for terrestrial insects is "uric acid," not "ammonia."

The primary nitrogenous waste excreted by terrestrial insects, such as insects and spiders, is uric acid. Uric acid is a somewhat insoluble waste product that requires less water for excretion in organisms living in dry or terrestrial settings.

Hence option B is correct.

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a is enzyme and c is shell substrate b is the substrate d is the

Explanation:

sub particles to form key or enzyme and e is full lock and key model

The new flavour of 16 oz Snapple would contain approximately 145 kilocalories.

To calculate the number of kilocalories in the Snapple, we need to know the caloric content of each macronutrient.

1 gram of high fructose corn syrup contains 4 kilocalories, so 20 grams would contain 80 kilocalories.

1 gram of fat contains 9 kilocalories, so 5 grams would contain 45 kilocalories.

1 gram of protein also contains 4 kilocalories, so 5 grams would contain 20 kilocalories.

We can then add up the kilocalories from each macronutrient to get the total kilocalories in the Snapple:

80 + 45 + 20 = 145 kilocalories

Therefore, the new flavour of 16 oz Snapple would contain approximately 145 kilocalories.

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Answer:

a cell used for reproduction that contains the haploid number of chromosomes.

Explanation:

A gamete is a mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.

Answer:alcoholic fermentation

Explanation:

The air bubbles and spongy texture of bread are a result of the process of baking of bread through alcoholic fermentation. Thus, the correct option is C.

During fermentation, carbon dioxide is produced in cell and it is trapped as tiny pockets of air within the dough. The production of carbon dioxide causes the dough to rise.

During the baking of bread, carbon dioxide expands and causes the bread to rise further. In this process, alcohol is produced during fermentation which evaporates during the baking process of bread. In this process, yeast eats the sugar and releases carbon dioxide which causes air bubbles.

Therefore, the correct option is C.

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Answer:

While spiral galaxies are bright, elliptical galaxiesare dim. Spiral galaxiesare hotbeds of star formation, but elliptical galaxies aren't nearly as prolific because they contain less gas and dust, which means fewer new (and brighter) stars are born.

Explanation:

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Answer:

There are two types of cells - Prokaryotic and Eucaryotic. Eukaryotic cells are larger, more complex, and have evolved more recently than prokaryotes. Where, prokaryotes are just bacteria and archaea, eukaryotes are literally everything else. From amoebae to earthworms to mushrooms, grass, bugs, and you.

Explanation:

During transcription, rna polymerase synthesizes RNA strand from a(n) DNA template.

Transcription is a classic event in molecular biology in which the DNA is transcribed to mRNA.

Transcription is an important event mentioned in central dogma of molecular biology. It is from transcription, translation (synthesis) of proteins is possible.

Transcription occurs at specific site in the cell. In prokaryotes, transcription takes place in cytoplasm whereas in eukaryotes, nucleus is the site for transcription.

Transcription involves three main steps:

After transcription, processing of mRNA is carried out so that it becomes mature and fully functional for translation process.

Therefore, transcription is important in copying information from DNA sequences for the correct synthesis of proteins.

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The four stages (in the correct order) of complete metamorphosis is as follows: egg, larva, pupa, and adult.

Metamorphosis is a change in the form and often habits of an animal after the embryonic stage during normal development.

Metamorphosis can either be complete or incomplete. Complete metamorphosis refers to change in anatomical and physiological form through a series of life stages.

This occurs in the animal world, more specifically the insect world. This set of four stages are as follows; egg, larva, pupa, and adult.

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Answer:

Explanation:

Quá trình tiêu hoá và hấp thụ chất dinh dưỡng

Answer:

because scientist think it will help let us students learn more about the living world

The instructional outcomes are lacking but they may be associated with affective outcomes that allow them to develop a respect for the scientific process.

The scientific process is a series of steps by which it is possible to collect empirical evidence by testing hypotheses.

The affective outcomes associated with respect to the scientific process involve a real understanding of the importance of this process in our daily lives.

In conclusion, the instructional outcomes that Mr. Bevins seeks for his students are lacking but they may be associated with affective outcomes that allow them to develop a respect for the scientific process.

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Answer:

Ice cores can tell scientists about temperature, precipitation, atmospheric composition, volcanic activity, and even wind patterns. The thickness of each layer allows scientists to determine how much snow fell in the area during a particular year.

Explanation:

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Explanation:

All living thing are biotic but not all biotic things have to have

The advantage of being able to clone the gene for human insulin is that using human insulin increases the probability that, in the future, the person suffering from diabetes can be weaned from a dependence on insulin. Thus, option A is correct.

The term clone has been defined as the exact copy of organism. The first clone is the dolly ship which has been created in the scientific manner. Human insulin is less likely to cause harmful side effects than cow, pig, or horse insulin.

There are too few cows, pigs, and horses to provide an adequate supply of their insulin and by using human insulin increases the probability that, in the future, the person suffering from diabetes can be weaned from a dependence on insulin.

Genetically engineered insulin is the synthetic human insulin which has been manufactured from the DNA sources in the laboratory. One advantage of the using genetically engineered insulin has been that it causes fewer allergic reactions as compared to animal insulin.

Therefore, option A is the correct answer.

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In this population of 500 jackrabbits, the observed genotype frequencies can be calculated based on the given phenotype frequencies.

The phenotype frequency of black rabbits is 0.5, gray rabbits is 0.3, and white rabbits is 0.2. Using the Hardy-Weinberg principle, we can determine the expected genotype frequencies. Assuming that the population is in Hardy-Weinberg equilibrium, the expected genotype frequencies are 0.25 for fbfwfbfw (black), 0.2 for fbfwfwfw (gray), and 0.04 for fwfwfwfw (white).

By dividing the expected genotype frequencies by the sum of all three expected frequencies, which is 0.49, we can calculate the observed genotype frequencies. Thus, the observed genotype frequencies in this population are approximately 51% for fbfwfbfw (black), 41% for fbfwfwfw (gray), and 8% for fwfwfwfw (white).

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The given statement, "The procedural term echoencephalography actually means the procedure of recording brain structures by use of sound," is true because encephalography uses high-frequency sound waves.

Echoencephalography, also known as cranial ultrasonography or neuro sonography, is a non-invasive medical imaging procedure that uses high-frequency sound waves to generate images of the brain.

It is used to evaluate the brain's size and structures, detect abnormalities such as cysts or tumors, and assess blood flow and oxygen supply to the brain.

Echoencephalography is commonly used on infants and young children whose skull bones are not yet fully developed, but it can also be used on adults.

The procedure involves the use of a transducer, a handheld device that emits high-frequency sound waves. The sound waves bounce off the brain structures and are reflected back to the transducer.

These echoes are then converted into images by a computer, which is displayed on a monitor for interpretation by a radiologist or other healthcare professional.

So, the given statement is true.

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