Multiple Choice
Which of the following is a recognized class of enzymes according to the Enzyme Commission (EC) classification?
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6. Enzymes and Enzyme Kinetics
Types of Enzymes
Multiple Choice
Which of the following is an example of an enzyme?
A
Glycogen
B
Cholesterol
C
Glucose
D
Lactase
Verified step by step guidance1
Understand what an enzyme is: Enzymes are biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.
Identify the options given: Glycogen, Cholesterol, Glucose, and Lactase.
Recall the nature of each option: Glycogen is a polysaccharide used for energy storage, Cholesterol is a lipid molecule important for membrane structure, Glucose is a simple sugar used as an energy source, and Lactase is a protein that catalyzes the breakdown of lactose.
Recognize that enzymes are typically proteins that catalyze biochemical reactions, so among the options, Lactase fits this definition as it catalyzes the hydrolysis of lactose into glucose and galactose.
Conclude that Lactase is the example of an enzyme because it functions as a biological catalyst, unlike the other molecules listed.
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