Question

Question: How is “lock and key” used to describe the action of enzymes? (1 point)

Answer Choices:

( ) Enzymes are able to create gaps in cell walls that allow reactants to enter cells.

( ) Enzymes are able to create gaps in cell walls that allow products to leave cells.

( ) Enzymes have a shape that specifically fits the reactants, like a key in a lock.

( ) Enzymes have a shape that specifically fits the products, like a key in a lock.

Answer 1

(X) Enzymes have a shape that specifically fits the reactants, like a key in a lock.

Explanation: the "lock and key" model describes how an enzyme's active site has a specific shape that matches its substrate.