Which of the following statements regarding protein digestion and absorption is TRUE?
A. Cells in the stomach secrete enterokinase, which breaks down proteins into smaller peptides.
B. Pepsin and trypsin are proteolytic enzymes that are most active in an acid pH.
C. More acid is secreted during the digestion of a high-protein meal than during the digestion of a meal containing little protein.
D. The presence of peptides in the stomach inhibits secretion of gastrin.
E. Proteins are too large to pass through the pyloric sphincter into the small intestine.
C
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A) Antibody B) Insulin C) Albumin D) Collagen
The region of the nephron containing intercalated cells primarily associated with pH balance is the
A) glomerulus. B) proximal convoluted tubule. C) nephron loop. D) collecting duct. E) papillary duct.
Long, tactile hairs that are extremely sensitive are called:
A) vibrissae B) vibrissa C) cilia D) ciliae
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Indicate whether the statement is true or false