Meat tenderizer is made with pepsin, an enzyme. A cook usually puts tenderizer on meat and then cooks the meat. If meat coated with tenderizer is placed in a refrigerator for a short time prior to cooking, how will the enzyme pepsin be affected?
F   Pepsin will be broken down.
G   Pepsin activity will slow down.
H   Pepsin molecules will change shape.
J   Pepsin will no longer behave as an enzyme.