Q.

What is common to pepsin and trypsin?

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a

Both are present in the pancreatic juice.

b

Both are secreted in inactive form and are activated by HCl.

c

Both are effective at an alkaline pH.

d

Both hydrolyse peptide bonds.

answer is D.

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Detailed Solution

Both pepsin and trypsin are proteolytic enzymes and hydrolyse peptide bonds.

Gastric juice contains pepsinogen whereas pancreatic juice contains trypsinogen.

Pepsin is activated by HCl whereas trypsinogen is activated by enterokinase.

Pepsin is effective at an acidic pH whereas trypsin is effective at an alkaline pH.

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