Multiple Choice
Which enzyme primarily catalyzes the breakdown of dietary carbohydrates (starch) into smaller sugars during digestion?
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6. Enzymes and Enzyme Kinetics
Enzymes
Multiple Choice
Which of the following is NOT an enzyme?
A
Catalase
B
Trypsin
C
Hexokinase
D
Hemoglobin
Verified step by step guidance1
Understand the definition of an enzyme: Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.
Review each option and identify its biological role: Catalase is an enzyme that breaks down hydrogen peroxide; Trypsin is an enzyme that digests proteins; Hexokinase is an enzyme that phosphorylates glucose in glycolysis.
Recognize that Hemoglobin is a protein responsible for oxygen transport in the blood, not a catalyst for chemical reactions.
Conclude that since Hemoglobin does not function as a catalyst, it is NOT an enzyme.
Therefore, the correct answer is Hemoglobin because it is a transport protein, not an enzyme.
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