MCAT Biochemistry Question 130: Answer and Explanation

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Question: 130

10. After a large, well-balanced meal, all of the following substances would be expected to be elevated EXCEPT:

  • A. fatty acids.
  • B. insulin.
  • C. glucose.
  • D. glucagon.

Correct Answer: D

Explanation:

After a large meal, one would expect blood to contain high levels of nutrients, such as glucose (choice (C)) and fatty acids (choice (A)), as well as regulators telling the body to utilize and store this fuel, like insulin (choice (B)). Glucagon is a peptide hormone used to raise blood sugar levels by promoting, among other processes, glycogenolysis and gluconeogenesis. Glucagon should be elevated during a fast.

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