Of the following statements about enzymes which ones are true

$(i)$ Enzymes lack in nucleophilic groups

$(ii)$ Enzymes are highly specific both in binding chiral substrates and in catalyzing their reactions

$(iii)$ Enzymes catalyse chemical reactions by lowering the activation energy

$(iv)$ Pepsin is a proteolytic enzyme

  • A$(i)$ and $(iv)$
  • B$(i)$ and $(iii)$
  • C$(ii)$, $(iii)$ and $ (iv)$
  • D$(i)$
AIPMT 1995, Medium
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