Which THREE of the following are examples of feedback mechanisms which help maintain homeostasis?
flagellar rotation for cell movement
proton pumping to maintain a proper pH level
protein synthesis
insulin secretion in response to high blood sugar
antibodies binding to a virus
increased heart rate in response to exercise
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Place the events of a feedback mechanism associated with body temperature in the correct order.
___ temperatures regulation center in the brain sends out signals
___ Body temperature exceeds 98.6 degrees F
___ nerve cells send message from skin to the brain
___ body returned to normal temperature around 98.6 degrees F
___ sweat glands throughout the body activate to cool off skin surface
1, 2, 3, 4, 5
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Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms
A. low blood sugar
B. normal body temperature in an arctic environment
C. light physical activity
D. normal boy temperature in a tropical environment