What Best Describes an Allosteric Enzyme

Which of the following statements best describes an allosteric binding site. Which of the following descriptions best describes an induced fit.

Allosteric Enzyme An Overview Sciencedirect Topics

Has a more active binding site that is.

. The process by which a substrate binds to an active site and alters the shape of the active site. Binding of a regulatory molecule to one site affects the ability of the enzyme to bind substrate at a distant catalytic site Answers. Which of the following descriptions best describes an allosteric inhibitor.

A Simple sequential model. Which of the following does not describe concerted theory of allosteric regulation. The process by which an active site alters shape such that it is ready to accept a substrate.

The binding brings about conformational changes thereby changing its catalytic properties. B It covalently binds substrate. Question 27 Which of the following best describes an allosteric enzyme.

It will stabilize the active form of an enzyme It will stabilize the relaxed R form of an enzyme It will stabilize the inactive form of an enzyme It will stabilize the tense T form of an. Mechanism of Action of Allosteric Enzymes. D It is a description of an active site which.

-The binding of a substance to the allosteric site can switch an enzyme between its active and inactive configurations. Substrate binds to an allosteric site rather than to the active site of an enzyme. The effector molecule can be an inhibitor or activator.

C It is a binding site which is separate from the active site and affects the activity of an enzyme when it is occupied by a ligand. This model was proposed by Koshland Jr. It is a binding site which is separate from the active site and affects the activity of an enzyme when it is occupied by a ligand.

As seen in the case of enzyme-substrate complexes the active site gets occupied with the substrate and later it results in product but for allosteric enzymes the other site other than the active site is occupied by allosteric inhibitors or regulators which decides the result of. B It is a binding site that can accept a wide variety of differently shaped molecules. A It is a binding site containing amino acids with aliphatic side chains.

Which of the following best describes an example of how an enzyme inhibitor can work in a reaction catalyzed by an enzyme. E It is inhibited by the presence of a coenzyme or a cofactor. It is a binding site that can accept a wide variety of differently shaped molecules.

Question 27 which of the following best describes an. The allosteric binding site affects the activity of an enzyme depending on whether it is occupied by a ligand or not. All the biological systems are well regulated.

B A drug that binds to an active site and inhibits the enzyme but which is displaced by increasing the concentration of substrate. Through feedback inhibition the cell responds to the amount of reaction product in order to regulate its further production. It may be gene expression cell division hormone secretion metabolism or enzyme activity everything is regulated to ensure proper development and survival.

C It binds noncompetitive inhibitors of the enzyme. An allosteric enzyme is an chemical involved in the regulation of cell processes. Allosteric enzymes are enzymes that have an additional binding site for effector molecules other than the active site.

B It is a binding site that can accept a wide variety of differently shaped molecules. C A drug that binds to an active site and inhibits. It has an active site that binds to the substrate and.

It allows movement of molecules and ions from one part of the cell to anotherD. 02 Which of the following descriptions best describes an allosteric inhibitor. A It binds allosteric regulators of the enzyme.

D It is involved in the catalytic reaction of the enzyme. Which of the following best describes the activity of an inhibitor of an allosteric enzyme select all the apply. For Teachers for Schools for Working Scholars.

The terms secondary binding site and inhibitory binding site do not exist. An allosteric enzyme differs from a Michaelis-Menten enzyme because the allosteric enzyme a. Binding of an activator molecule changes the shape of the active site of an enzyme.

A It is a binding site containing amino acids with aliphatic side chains. Which of the following statements best describes an allosteric binding site. The enzyme inhibitor attacks and destroys the enzyme which prevents the enzyme from helping in the reaction.

We review their content and use your feedback to keep the quality high. The enzyme inhibitor catalyzes the reverse reaction which counteracts the work of the enzyme. These enzymes play a role in cell metabolism by catalyzing various events like other enzymes and they can also be used to control the rate of metabolism.

A drug that binds to an active site and undergoes a reaction. In the year 1966. 100 3 ratings Transcribed image text.

The enzyme is regulated by. It binds a site on the enzyme distinct from the active site and enhances enzyme activity It binds the active site on an enzyme and reduces enzyme activity It binds the active site on an enzyme and enhances enzyme activity It binds a site on the enzyme distinct. The conformation of the active site is determined by the tertiary or quatermary structure of the enzyme.

The enzyme is made up of only one polypeptide subunit b. A A drug that binds to an active site and undergoes a reaction. 36 Which of the following best describes an enzymes active site.

A drug that binds to an active site and inhibits the enzyme but which is displaced by increasing the concentration of substrate. A molecule that binds to a site other than the active site of. Allosteric enzymes are those enzymes which have an additional site apart from the active site.

Allostery is the regulatory enzyme where binding at one site influences the binding at other sites. Two general models for the inter-conversion of inactive and active forms of allosteric enzymes have been proposed. Feedback regulation ensures the appropriate activity from an enzyme when its needed.

QUESTION 2 Which of the following best describes an allosteric activator. Learn about several allosteric sites and. According to this theory the aliosteric enzyme can exist in only two conformational changes.

Sites on the enzyme molecule that permit allosteric modification of enzyme. It is distinct from the active site where the enzyme catalysed reaction takes place. On an enzyme the allosteric site is where molecules switch the enzymes biological activity on and off.

Feedback regulation of an enzyme occurs when a product of the reaction binds to an allosteric site on the enzyme and affects its catalytic activity. Which of the following statements best describes induced fit. Which of the following statements best describes an allosteric inhibitor.

Which of the following best describes an allosteric enzyme.

Allosteric Enzyme An Overview Sciencedirect Topics