Which one of the following enzymes is not part of the enzymatic component of the pancreatic juice?

Correct Answer: D

Rationale: The correct answer is D: chymotrypsin. Chymotrypsin is not part of the enzymatic component of pancreatic juice. Pancreatic juice contains amylase for carbohydrate digestion, lipase for fat digestion, and nucleases for nucleic acid digestion. Chymotrypsin is produced in the pancreas but is not secreted directly into the pancreatic juice. It is released in an inactive form that is activated in the small intestine. Therefore, chymotrypsin is not directly involved in the initial breakdown of nutrients in the pancreatic juice.

Correct Answer: A

Rationale: The correct answer is A because the absorption of vitamins from the intestine involves various mechanisms. Vitamin E is indeed absorbed by a protein that binds peroxidized fatty acids. Thiamine pyrophosphate and pyridoxal phosphate need to be dephosphorylated before absorption. Oxidized vitamin C is absorbed by a glucose transporter. Therefore, all the options given are correct as they describe different aspects of the absorption process. Each choice provides a unique insight into how different vitamins are absorbed, highlighting the complexity of the absorption process.

Correct Answer: C

Rationale: The correct answer is C because macrophages can indeed infiltrate enlarged adipocytes in obesity. This is a true statement as obesity is associated with chronic low-grade inflammation in adipose tissue, leading to macrophage infiltration. Option A is incorrect as inflammation can also occur in response to tissue damage. Option B is incorrect as inflammation is a normal and necessary response to injury or infection for tissue repair. Option D is incorrect as statement C is true.

Correct Answer: C

Rationale: The correct answer is C because an increase in oxygen does not contribute to local vasodilation during muscle contraction. Oxygen is typically consumed by working muscles and does not act as a vasodilator. On the other hand, increases in carbon dioxide and hydrogen ions lead to vasodilation by stimulating the release of vasodilatory substances. Choice D is incorrect because oxygen, in this context, does not contribute to vasodilation like carbon dioxide and hydrogen ions do.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.