True or false Steroids can give athletes an unfair strength advantage over other athletes in their sport.

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

What causes fermentation a. antibodies b. antigens c. microorganisms d. antibiotics

When calculating the daily protein needs for marathon runners or competitive weightlifting, you should allow for approximately grams of protein per kilogram of body weight