Question

Which of the following best describes what happens to an enzyme after it catalyzes a chemical reaction?

Its mass decreases since part of the molecule is used up.

It is unchanged and can be used again for the same chemical reaction.

It becomes chemically bonded to the products of the reaction.

Its shape changes, giving it different chemical and physical properties.

Answer 1

It is unchanged and can be used again for the same chemical reaction.


is the answer

Answer 2

It is unchanged and can be used again for the same chemical reaction.

Step-by-step explanation:

Enzymes are bio-catalysts which speed up the rate of chemical reactions by lowering the activation energy for the reaction and producing binding energy. But during chemical reaction the enzymes are unchanged and can be reused for the same chemical reaction. Most of the enzymes are proteins and without enzymes a biochemical reaction cannot take place.

For example: Amylase catalyzes the conversion of starch into sugar.