Question

How do enzymes speed up chemical reactions? Enzymes




A) lower the activation energy of chemical reactions.
B) raise the temperature of the cell, speeding chemical reactions.

C) store ATP, allowing more energy to be used in chemical reactions.

D) act as miniature 'transfer trucks', gathering materials for chemical reactions, and placing them together.

Answer 1

a. lower the activation energy of chemical reactions

Answer 2

Answer:

A) Lower the activation energy of chemical reactions.

Explanation:

Enzymes speed up chemical reactions by lower the activation energy of chemical reactions. The lower the activation energy of a reaction faster will be the rate. Activation energy is the minimum energy required to start a chemical reaction.

Enzymes initiates the chemical reactions by to reactant at the active site. Like all catalyst, enzymes work by lowering the activation energy of chemical reactions. Many enzymes change shapes when substrates bind.