The digestion of proteins does not end at the brush border. Which of the following is true regarding the final stages of protein digestion?
Show answer and explanation
Correct answer: Dipeptides and tripeptides are hydrolyzed inside the enterocyte
While many amino acids are absorbed as singles, a significant portion of protein is absorbed as dipeptides and tripeptides. Once inside the enterocyte, cytosolic peptidases complete the digestion into free amino acids before they enter the blood.
Practice all 40 Enzymes and Digestion of Carbs, Proteins, Fats questions
Keep practicing
More Enzymes and Digestion of Carbs, Proteins, Fats questions
- A patient with a congenital deficiency of enterokinase (enteropeptidase) would likely suffer from malabsorption of which nutrients?
- Which of the following describes the function of the enzyme Phospholipase A2?
- What is the primary physiological purpose of forming micelles during fat digestion?
- Which of the following carbohydrates cannot be digested by human enzymes and instead undergoes fermentation by colonic bacteria?
- Which of the following is a characteristic of the enzyme Elastase?
- Why is the bicarbonate secretion from the pancreas essential for the activity of pancreatic enzymes?