Q127 / 160 · JIPMER 2005 · Zoology

Pepsin is inactivated at pH

  • A
    below 3
  • B
    below 2
  • Correct answer
    C
    above 5
  • D
    above 3

Solution

Pepsin is inactivated at pH above 5 . Pepsin is a proteolytic or protein splitting enzyme. The pH optimum of pepsin is about 2 and the enzyme, therefore, works well in the acidic gastric juice while it is inactivated in the basic medium.

Hence, the correct answer is option: 'C'.

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