The color of which skin pigment is genetically determined?

a. carotene
b. keratin
c. melanin
d. hemoglobin


Answer: c. melanin

Anatomy & Physiology

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The medical term for looseness is ________________________________________

Fill in the blank(s) with correct word

Anatomy & Physiology

Negative feedback loops are ________.

A. not homeostatic mechanisms B. homeostatic mechanisms C. associated with "vicious circles" D. self-amplifying cycles E. usually harmful

Anatomy & Physiology

Of the fluid entering the small intestine, ____ percent is reabsorbed

a. 100 b. 95 c. 85 d. 50 e. < 50 percent

Anatomy & Physiology

Oxygen deficit represents

A. the amount anaerobic metabolism must increase after exercise. B. the amount of oxygen converted to lactic acid during exercise. C. the amount of carbon dioxide that cells need to eliminate. D. conversion of pyruvic acid to lactic acid. E. the amount of oxygen that cells need to replenish ATP supplies after exercise.

Anatomy & Physiology