Biology
Enzyme Review
Name:
1. Write down the “picked pairs” and then write a relationship that exists between
the two terms.
2. Below are questions from your textbook (pg 106). Answer them in the space
provided.
6. A specific reactant an enzyme acts upon is called the
a. catalyst.
b. sucrase.
c. active site.
d. substrate.
7. An enzyme does which of the following?
a. adds heat to a reaction, speeding it up
b. lowers the activation energy of a reaction
c. cools a reaction, slowing it down
d. raises the activation energy of a reaction
Questions from textbook continued:
15. Analyzing Graphs Use the graph to answer the questions below.
a. At which temperature does enzyme A perform best? Enzyme B?
b. Knowing that one of these enzymes is found in humans and the other in thermophilic
(heat-loving) bacteria, hypothesize which enzyme came from which organism.
c. Propose a hypothesis that explains why the rate of the reaction catalyzed by enzyme A
slows down at temperatures above 40°C.
19. Developing Hypotheses Many humans are lactose-intolerant, meaning they cannot
digest milk products containing the disaccharide lactose. Hypothesize the reason behind
lactose intolerance.
20. What's Wrong With These Statements?
Briefly explain why each statement is inaccurate or misleading.
a. The structure of a protein is like a long strand of yarn.
b. Enzymes provide activation energy for reactions.
Back to questions not in your textbook!
Use the following information to determine if you would make jello with canned
pineapple or fresh pineapple:
1. Fresh Pineapple contains bromelain (a mixture of enzymes that “digest”
proteins)
2. Canned pineapple – the canning process requires high heat
3. Jello – the material that actually solidifies is called gelatin and gelatin is a
protein
Would you use fresh pineapple or canned pineapple when making jello and
explain your answer.