MCQ practice · SSC Biology Board questions · Chapter 5: Food, Nutrition and Digestion
Into which compound does protein break down (in the stomach)?
Think it through first, then pick an option.
- a fatty acid
- b glucose
- c simple peptide
- d polypeptide
Answer and explanation
Correct answer: d polypeptide
In the stomach pepsin breaks protein into polypeptides. Fatty acid comes from fat and glucose from carbohydrate.
Why the other options are wrong
- a fatty acid: “fatty acid” does not fit here. In the stomach pepsin breaks protein into polypeptides. Fatty acid comes from fat and glucose from carbohydrate.
- b glucose: “glucose” does not fit here. In the stomach pepsin breaks protein into polypeptides. Fatty acid comes from fat and glucose from carbohydrate.
- c simple peptide: “simple peptide” does not fit here. In the stomach pepsin breaks protein into polypeptides. Fatty acid comes from fat and glucose from carbohydrate.
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