NABTEB Biology 2025 Objective — Question 23
Question 23 of 50 from the National Business and Technical Examinations Board (NABTEB) Biology 2025 Objective paper, with the correct answer and a full explanation.
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Use the diagram below (a system in humans) to answer this question and the next. Enzymatic digestion of protein begins in the part labeled
- A. I
- B. II
- C. IIICorrect
- D. IV
Explanation
Enzymatic digestion of protein begins in the stomach, where pepsin acts on proteins in the presence of hydrochloric acid. (Note: this question depends on a diagram that was not fully legible in the source scan; the answer given is a best estimate.)
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