What is leptin?

A. a hormone that is secreted by the hypothalamus in the brain
B. an enzyme that is secreted by the thyroid gland
C. an enzyme that is secreted by muscle tissue
D. a hormone that is secreted by fat cells
E. a hormone that is present in every cell of the body


D. a hormone that is secreted by fat cells

Health & Biomechanics

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What is the recommended health fitness fat percentage for a 20-year-old woman?

A. 30 to 35 percent B. 20 percent or less C. 15 percent or less D. 6 to 12 percent E. 28 percent or less

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Joints are part of what body system?

What will be an ideal response?

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List and discuss five precautions to take when exercising in hot temperatures

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The majority of rapes are committed against females who are:

a. 16- to 24-years-old. b. 18- to 21-years-old. c. 22- to 29-years-old. d. 30- to 35-years-old.

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