Human Anatomy – Enzymes Multiple Choice Questions

1.

(05.04 MC)

Lisa adds protein powder to her tropical smoothie. She believes the protein has enzymes that will improve the results of her cardio workouts. Which of the following disproves her predication? (3 points)

	Enzymes cannot improve the results of exercise.
	The enzymes in the smoothie are inactive.
	Protein does not contain enzymes.
	Enzymes help with digestion, not metabolic processes.

2.

(05.04 MC)

A pH of 2 is optimal for specific digestive enzymes found in a pig’s stomach. If these enzymes are placed into a neutral substrate solution, what do you predict will be the outcome? (3 points)

	The enzyme reaction time would decrease.
	The enzyme reaction time would increase.
	The enzyme reaction time would stay the same.
	The optimal pH of the enzyme would change.

3.

(05.04 MC)

A biologist wants to prevent the bonding of enzymes to the substrate in his test solution. What should he do? (3 points)

	Add a vitamin solution
	Add a zinc solution
	Add an inhibitor solution
	Add a co-factor solution

4.

(05.04 MC)

Which factor decreases the rate of a chemical reaction? (3 points)

	An inhibitor
	A co-factor
	Increased substrate
	Neutral pH

5.

(05.04 MC)

Which component is required for the activation of some enzymes? (3 points)

	Presence of a co-factor
	Basic pH levels in the substrate
	Higher enzyme concentration
	Lower temperature in the substrate

6.

(05.04 MC)

What statement best describes what happens during the catalytic cycle? (3 points)

	The enzyme breaks the substrate apart to prepare for the reaction.
	The enzyme positions the substrate to increase access during a reaction.
	The substrate uses enzyme energy to start the reaction.
	The active site releases the substrate and replaces it with an inhibitor.

 

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