BIOLOGY HIGH SCHOOL

A researcher proposes a model to explain how enzyme-substrate interactions determine enzyme specificity. The model is based on the idea that substrate molecules form favorable interactions with the amino acid side chains in an enzyme’s active site. Based on the model, which of the following statements best explains an enzyme’s specificity for a particular substrate molecule?a. A hydrophilic molecule interacts with nonpolar side chains in the enzyme’s active site.b. A hydrophobic molecule interacts with polar side chains in the enzyme’s active site.c. A molecule with positive charges interacts with positively charged side chains in the enzyme’s active site.d. A molecule with negative charges interacts with positively charged side chains in the enzyme’s active site.

Answers

Answer 1
Answer:

Answer:

Option- D

  • A molecule with negative charges interacts with positively charged side chains in the enzyme’s active site.

Explanation:

  • A researcher proposes a model to explain how enzyme-substrate interactions determine enzyme specificity. The model is based on the idea that substrate molecules form favorable interactions with the amino acid side chains in an enzyme’s active site.Based on the model, the following statements best explains an enzyme’s specificity for a particular substrate molecule, which is "A molecule with negative charges interacts with positively charged side chains in the enzyme’s active site."
Answer 2
Answer:

Answer:

D. A molecule with negative charges interacts with positively charged side chains in the enzyme’s active site.

Explanation:

Because opposite charges attract, a molecule with negative charges will form favorable interactions with positively charged side chains in an enzyme’s active site. Based on the model, the favorable interactions helps explain the enzyme’s specificity for the molecule as a substrate.

I also got this question correct so I am sure.

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Which list of items would an ecological scientist most likely include when describing a forest community?

Answers


The trees, soil, living organisms that rely on these tree forest ecosystem.
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Is it possible for a whale in captivity to live after it has been realsed

Answers

The possibility of release is only possible if the whale has only been in captivity for a short time. An example of this is Springer, the killer whale that was treated for emaciation and nursed back to health before being rehabitated and ruined to their pod. For orcas like the whales at Seaworld (which has just been banned from further breeding! Yay!), these whales are unable to be released as they have been in captivity their whole life. All animals, including marine mammals, can be imprinted by human interaction. Captive whales are accustomed to being fed by humans and do not know how to fend for themselves in the wild. If they were released into the wild, these tame whales may attack boats and humans, thinking they will feed them and inevitably starve to death because they are unable to hunt. Whales live in pods otherwise known as their whole life. They hunt and feed with them. If a captive whale were to be released, it would be unable to hunt as they wouldn't have a pod that would assist them.

Mollusks' group of organs is called a

Answers

It is called the visceral mass

The structure that mollusks use to excrete wastes is known by the name of nephridia.  Mollusk is the other name for shellfish. there are three varieties of shell fish present. Hatcher footed, Belly footed and head footed variety of shellfish are available.

Final answer:

The group of organs in a mollusk is called a 'visceral mass'. It includes the digestive system, respiratory system, circulatory system, and the reproductive system. The mass is enclosed within the mollusk's shell in many species.

Explanation:

The group of organs within a mollusk is called a 'visceral mass'. Mollusks are a group of invertebrates that includes animals such as snails, clams, and squids. The visceral mass, which is surrounded and protected by the animal's shell in many species, includes systems for digestion, circulation, respiration, and reproduction.

The digestive system of a mollusk includes a mouth, stomach, and intestines where food is ingested, broken down, and nutrients are absorbed. The circulatory system is typically open, meaning blood flows freely in cavities within the visceral mass. The respiratory system typically involves a pair of gills where oxygen is absorbed and carbon dioxide expelled.

Learn more about Visceral Mass of Mollusks here:

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How do fungi mate with other fungi?

Answers

Actually, fungi usually produce spores that produce the offspring, basically fungi are mostly asexual reproducers.

Answer:

Explanation:

To mate, all a fungus has to do is bump up against another member of its species and let their cells fuse together. S. commune uses a special kind of structure called a clamp connection to do this, and it allows them to exchange their cell's nuclei, along with the genetic information inside

A student poses the question: How does the presence of dissolved salt affect the freezing point of water? To answer this question, the student set up two conditions. In the first condition, the student added salt to water in a container and referred to this condition as the variable. In the second condition, the student did not add any salt to water in a second container and referred to this condition as the control. The student took both containers and attempted to freeze the water at various temperatures to assess the freezing point. Would this be a valid experiment? A. Yes, because there is more than one variable.
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Answers

Answer:

The correct answer is option B. yes because there are one variable and a control.

Explanation:

The validity of experiments can be tested by the four components of experiments. These four components are control, dependent variable, independent variable, and constants. All of this basic component is the validity of the experiments.

In this experiment there is the control where experiment is performed within controlled and there is also one variable.

Thus, the correct answer is option B. yes, because there are one variable and a control.

Answer:

The correct answer will be option-B.

Explanation:

A scientific experiment must contain three variables: independent variable (which can be manipulated), dependent variable(which can be tested) and control (which is kept constant).

Experimental samples must be divided into two groups: an experimental group in which variable to be studied is tested and a control group in which the independent variable does not influence the experiment.

In the given question, since experimental design contains variables and the experimental as well as the control group which act as a reference group to the experiment.

Therefore, Option-B is the correct answer.
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