Unit 2 Virtual Lab Report
Virtual Lab: Enzyme Controlled Reactions
Worksheet
1. Which of the following does NOT apply to an enzyme:
b. Inorganic
2. When an enzyme catalyzes a reaction:
a. Substrate(s) bind in the active site
3. Which of the following would interfere most with the ability of an enzyme to catalyze a reaction?
a. Reduced concentration of substrate available
4. Feedback mechanisms regulate the rate of enzyme activity, effectively “turning off” an enzyme in a reversible way until more product is needed. Which of the following would be most effective as a feedback mechanism?
d. Temporary binding of a non-substrate molecule in the active site
5. Which of the following statements is accurate in describing the activity of the lactase enzyme?
d. One lactase enzyme can catalyze many reactions
6. Look up and write in the following definitions as they apply to chemical reactions:
a. Catabolic- The reaction of a chemical that occurs when a larger more complex molecule is being broken down into simpler forms while releasing energy.
b. Anabolic- Is a chemical reaction that happens when simpler molecules are being put together into larger molecules with an energy cost.
c. Endergonic- It is a chemical reaction that occurs when the standard change in free energy is positive, and energy is absorbed.
d. Exergonic- A chemical reaction that happens when energy is being released from a system to its surroundings.
7. Is the action of the enzyme illustrated in the video:
a. Catabolic
b. Exergonic
8. Endergonic or exergonic? Is the action of lactase:
a. Catabolic
b. Exergonic
9. Why is enzyme activity similar to, but not exactly like, a “Lock” and “Key”?
I believe that enzymes are considered to be like adaptive keys that can be formed, shaped and conform to the shape of the substrate. The active site undergoes a change of dynamics and shape when the substrate is determined.
Table 1: Record your data on the number of product molecules formed per minute obtained from
Worksheet
1. Which of the following does NOT apply to an enzyme:
b. Inorganic
2. When an enzyme catalyzes a reaction:
a. Substrate(s) bind in the active site
3. Which of the following would interfere most with the ability of an enzyme to catalyze a reaction?
a. Reduced concentration of substrate available
4. Feedback mechanisms regulate the rate of enzyme activity, effectively “turning off” an enzyme in a reversible way until more product is needed. Which of the following would be most effective as a feedback mechanism?
d. Temporary binding of a non-substrate molecule in the active site
5. Which of the following statements is accurate in describing the activity of the lactase enzyme?
d. One lactase enzyme can catalyze many reactions
6. Look up and write in the following definitions as they apply to chemical reactions:
a. Catabolic- The reaction of a chemical that occurs when a larger more complex molecule is being broken down into simpler forms while releasing energy.
b. Anabolic- Is a chemical reaction that happens when simpler molecules are being put together into larger molecules with an energy cost.
c. Endergonic- It is a chemical reaction that occurs when the standard change in free energy is positive, and energy is absorbed.
d. Exergonic- A chemical reaction that happens when energy is being released from a system to its surroundings.
7. Is the action of the enzyme illustrated in the video:
a. Catabolic
b. Exergonic
8. Endergonic or exergonic? Is the action of lactase:
a. Catabolic
b. Exergonic
9. Why is enzyme activity similar to, but not exactly like, a “Lock” and “Key”?
I believe that enzymes are considered to be like adaptive keys that can be formed, shaped and conform to the shape of the substrate. The active site undergoes a change of dynamics and shape when the substrate is determined.
Table 1: Record your data on the number of product molecules formed per minute obtained from