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MCAT Question A Day - 7/4/13 - Answer

Which hormone does not have hyperglycemic effects (helps raise blood glucose levels)?

A.  Glucagon
B.  Insulin
C.  Epinephrine
D.  Cortisol

The correct answer is (B). Insulin reduces blood glucose levels by stimulating body cells (glucose uptake), liver cells (glycogen production), and adipose cells (fat formation). Thus, insulin is hypoglycemic. The other choices each help raise glucose levels by stimulating glycogenolysis, mobilization of fat, and/or gluconeogenesis.