Explain the difference between an essential and a nonessential amino acid
More than half of the amino acids are nonessential amino acids, meaning that the body can make them for itself. Proteins in foods usually deliver these amino acids, but it is not essential that they do so. There are other amino acids that the body cannot make at all, however, and some that it cannot make fast enough to meet its needs. The proteins in foods must supply these nine amino acids to the body; they are therefore called essential amino acids. (Some researchers refer to essential amino acids as indispensable and to nonessential amino acids as dispensable.)
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The recommended amount of dietary carbohydrate (g/kg body weight) for an athlete training for a marathon is approximately
a. 2. b. 4. c. 8. d. 12.
The part of the kidney that acts like a sieve to filter wastes is the:
a. nephron. b. glomerulus. c. tubule. d. lobe.
The two best strategies to aid performance and prevent hyponatremia in ultraendurance athletes are:
a. replenishment of sodium and prevention of overdrinking. b. replenishment of sodium and voluntary dehydration. c. replenishment of sodium and intake of a large amount of potassium. d. intake of salt tablets and excessive water intake.
Why can't people speed up their basal metabolic rate (BMR) with exercise or with supplements?