Question

Coenzymes differ from enzymes, in that coenzymes

Select one:

a. are active only outside the cell.

b. are polymers of amino acids.

c. are specific for one reaction.

d. bind to the active sites of enzymes.

Answer 1

Question:

Coenzymes differ from enzymes, in that coenzymes

Select one:

Answer:

d. bind to the active sites of enzymes.

Explanation:

Enzymes are active inside the cell, they are not only active outside the cell. Many enzymes require coenzyme to carry out their particular reaction and it also active inside the cell not only active outside the cell. Thus, option ‘a’ is not correct.

Enzymes are protein so that these are made up of amino acids but coenzymes are non-protein, these are complex organic groups. So coenzymes are not polymers of amino acids. Thus, option ‘b’ is not correct.

Enzymes are specific for its substrate and therefore it is specific for one reaction and coenzymes can’t function alone it binds to the enzyme and active the enzyme and coenzymes are also specific for one enzyme. Thus, option ‘c’ is not correct.

Enzymes have its own active site where the substrates bind and complete the reaction. Coenzymes bind to the enzymes and change its configuration and activate the enzymes. Sometime substrates can’t bind directly to the active sites of enzymes. These enzymes require coenzymes which bind to the active sites of enzymes and lead some conformational change in the enzymes which result the binding of substrate to the enzyme. Thus, option ‘d’ is correct.