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35>A young boy presents with failure to thrive. Biochemical analysis of a
duodenal aspirate after a meal reveals a deficiency of enteropeptidase
(enterokinase). The levels of which of the following digestive enzymes
would be affected?
A. Amylase
B. Colipase
C. Lactase
D. Pepsin
E. Trypsin
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trypsinogen-----------> trypsin by enteropeptidase
E.
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Because enteropeptidase converts trypsinogen into trypsin. When enteropeptidase is deficient, I guess trypsin production is affected.
Why D?
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bcz enteropeptidase has peptidase at the end,and it means a peptide breaking enzyme.pepsinogen is a peptide,is it?
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I don't know. I didn't pay much attention to this area before my test.
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Because pepsin is a gastric enzyme and enterokinase does not have any effect on pepsin. And secondly in intestine, pH is alkaline so pepsin doesnt work in intestine.
