Test: High School Biology

1.

Which of the following is an example of positive feedback?

Body temperature rises and causes sweat glands to open up and reduce body temperature

Oxytocin causes uterine contractions, which cause more release of oxytocin

Hunger causes metabolism to slow down, which reduces hunger

Blood pressure rises, which causes vasodilation to lower blood pressure

Blood sugar rises, which causes the body to release insulin, which lowers blood sugar

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