Pepsin and trypsin work best at different pH values because

  1. they work in different parts of the gut
  2. bile denatures pepsin
  3. they are both lipases
  4. they digest different foods
Answer

A) they work in different parts of the gut

Stomach is acidic; duodenum is nearly neutral. O Level Biology · Topic 8 Human Nutrition · 8.2 Human digestive system

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