Select the TWO true statements from the list below regarding the structure and f

ID: 706298 • Letter: S

Question

Select the TWO true statements from the list below regarding the structure and function of enzymes.

Question 10 options:

a. Phosphorylation of serine residues, and conformational changes in enzyme subunits, always inhibit enzyme activity.

b. Enzymes decrease the equilibrium constant of biochemical reactions and increase the rates of reactions from years to minutes.

c. Enzymes function only in their cellular environment.

d. Enzymes increase the rates of biochemical reactions without changing the equilibrium constant.

e. The substrate can be predicted by simply knowing the structure of the unoccupied enzyme active site, similar to a key fitting a lock.

f. Hydrogen bonding networks are all that is required for enzymes to catalyze biochemical reactions.

g. Enzyme cofactors can increase the chemical functionality of enzymes, which are otherwise limited by the R groups of amino acids.

h. All proteins are not enzymes but all enzymes are proteins.

Solution:

Enzymes acts as catalyst in general to increase the speed of bio-reaction based on mechanism, from the given list true statements are as follows,

a. Phosphorylation of serine residues, and conformational changes in enzyme subunits, always inhibit enzyme activity.

b. Enzymes decrease the equilibrium constant of biochemical reactions and increase the rates of reactions from years to minutes

d. Enzymes increase the rates of biochemical reactions without changing the equilibrium constant

f. Hydrogen bonding networks are all that is required for enzymes to catalyze biochemical reactions.

h. All proteins are not enzymes but all enzymes are proteins.

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