a- In the induced-fit model of enzyme action, a _______ must bind to the enzyme\

Question

a- In the induced-fit model of enzyme action, a _______ must bind to the enzyme's______ for the enzyme to perform its function.
(A) catalyst; activation energy
(B) product; catalytic site
(C) product; active site
(D) water molecule; allosteric site
(E) substrate; active site

b- Which of the following is CORRECT for an exergonic reaction?
(A) more activation energy is needed than for an endergonic reaction
(B) less activation energy is needed than for an endergonic reaction
(C) products have more energy than reactants
(D) products have less energy than reactants
(E) both B and C are correct

c- Enzymes:
(A) increase the rate of a chemical reaction
(B) are always stored in active form
(C) are consumed in chemical reactions
(D) raise activation energy
(E) all the above

Explanation / Answer

c) Enzymes increases the rate of a chemical reaction. They are not gets affected in the chemical reactions and they are need not be in thier active form.

b) Exergonic reactions are those in which energy is released during a reaction. Thses reactions have gibss energy negative that means they are spontaneous in nature hence less activation energy is needed than for an edergonic reaction and product have less energy than reactants.

a) In the induced fit model of enzyme action a substrate must bind to enezyme's active site for the enzyme to perform its function.

Hence this mechanism also reffered as lock and key mechanism.

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