Protein Absorption Quiz

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Which cells in the stomach secrete pepsinogen?

Enteropeptidase

Brush border cells

Chief cells (correct)

Parietal cells

What activates pepsinogen to become pepsin?

HCL (correct)

Enteropeptidase

Amylase

Lipase

Which enzyme is most specific in cleaving peptide bonds before arginine and lysine?

Chymotrypsin

Lipase

Trypsin (correct)

Amylase

Which enzyme cleaves amino acids with small side chains?

Elastase Signup and view all the answers

Which enzyme is responsible for cleaving hydrophobic C-terminal amino acids?

Carboxypeptidase A Signup and view all the answers

Where is enteropeptidase secreted from?

Brush border cells Signup and view all the answers

Which enzyme is responsible for cleaving hydrophobic amino acids?

Chymotrypsin Signup and view all the answers

Which enzyme is responsible for cleaving amino acids from the amino terminal end?

Aminopeptidase Signup and view all the answers

What is the function of pancreatic lipase?

Cleaves lipids Signup and view all the answers

What is the function of pancreatic amylase?

Cleaves carbohydrates Signup and view all the answers

Which side of the intestinal epithelial cells do amino acids and small peptides get absorbed through?

Apical side Signup and view all the answers

Which of the following maintains the sodium gradient required for the co-transport of amino acids in the intestinal epithelial cells?

Na+ K+ ATPase Signup and view all the answers

How many specific Na+ dependent transporters are involved in the absorption of amino acids in the intestinal epithelial cells?

6 or more Signup and view all the answers

Which of the following amino acids are transported out of the intestinal epithelial cells on the serosal side?

Neutral amino acids Signup and view all the answers

During starvation, what happens to the absorption of amino acids by intestinal cells?

It becomes reversible Signup and view all the answers

Which cells can concentrate amino acids from the blood?

Intestinal cells Signup and view all the answers

Which of the following proteins have a high turnover rate?

All of the above Signup and view all the answers

What happens to excess protein in the diet?

It is converted to triglycerides Signup and view all the answers

What is the role of mTOR in regulating autophagy?

Inhibits autophagy Signup and view all the answers

What is the function of Rheb and TSC1/TSC2 in regulating autophagy?

Activate autophagy Signup and view all the answers