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Feedback Mechanisms

APBIO-YWSLCN

Negative feedback is defined as a decrease in function in response to a stimulus. In negative feedback, an output of a particular system or reaction is decreased. Positive feedback is an increase in function in response to a stimulus. In positive feedback, an output is enhanced.

Which of the following is NOT an appropriate example of negative feedback?

A

The regulation of human body temperature in which the body shivers to bring up the temperature and sweats to cool down.

B

The control of hunger in which metabolism slows down to conserve energy and to allow the organism to survive with less food.

C

The formation of a blood clot where once a vessel is damaged, platelets stick to the injured site and release chemicals that attract more platelets until a clot is formed.

D

The production of red blood cells that results from a decrease in oxygen detected by the kidneys, which secretes a hormone that stimulates the production of red blood cells.