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Which one of the following is an enzyme ?

  • A.Trypsin
  • B.Insulin
  • C.Somatotropin
  • D.Glucagon

Answer: A

Trypsin is an enzyme - a protease secreted by the pancreas that digests protein in the small intestine.

Insulin, glucagon and somatotropin are all hormones. Enzymes catalyse reactions; hormones carry regulatory signals.

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