Enzymes

Which two procedures would most likely cause a decrease in the rate of protein digestion?

-Decreasing the pH to 6.0 -Increasing the temperature to 45C

Neither enzyme works at a pH of

13

Which statement best describes enzymes?

Every enzyme controls many different reactions

Meat tenderizer contains an enzyme that interacts with meat. If meat is coated with tenderizer and then placed in a refrigerator for a short time, how would the enzyme be affected?

Its activity would slow down

Pepsin works best in which type of environment?

acidic, only

At what pH would an enzyme be most effective?

between 8-10

which characteristic allows enzymes to function in a specific way is

each enzyme has a characteristic shape

a catalyst is also known as a(n)

enzyme

The function of a specific enzyme is most directly influenced by its

molecular size

When the substrate concentration increases from 0.4% to 0.5%, the rate of the reaction

remains the same

a sample of food containing one type of a large molecule was treated with a specific digestive enzyme. Nutrient tests performed on the resulting products showed the presence of simple sugar, only. Based on these test results, the original larger molecules contained in the sample were molecules of

starch

what statement describes ALL enzymes?

they affect the rate of all chemical reactions