Which of the following is an example of positive feedback?
A) An increase in blood sugar concentration increases the amount of the hormone that stores sugar as glycogen.
B) A decrease in blood sugar concentration increases the amount of the hormone that converts glycogen to glucose.
C) An infant's suckling at the mother's breast increases the amount of the hormone that induces the release of milk from the mammary glands.
D) An increase in calcium concentration increases the amount of the hormone that stores calcium in bone.
E) A decrease in calcium concentration increases the amount of the hormone that releases calcium from bone.
Answer: C
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AP Biology
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