All of the following are true physiological functions exhibited by protein EXCEPT
A. it forms the structural basis of muscle tissue.
B. it is the major component of most enzymes in the muscle.
C. it is the major energy source during exercise
D. All of the answers are correct. - answer✔C. it is the major energy source during exercise
The essential element in protein that is not possessed by either carbohydrate or fat is
A. carbon.
B. hydrogen.
C. oxygen.
D. nitrogen. - answer✔D. Nitrogen
Which of the following statements comparing animal and plant protein is INCORRECT?
A. All natural, unprocessed animal and plant foods contain all twenty amino acids
B. Animal protein is considered to be a complete or high-quality protein
C. Proteins usually exist in smaller concentrations in plant foods, thus the quality of amino acids
found in plants is inferior to those obtained from animals
D. Most plant proteins have insufficient amounts of one or more of the essential amino acids -
answer✔C. Proteins usually exist in smaller concentrations in plant foods, thus the quality of
amino acids found in plants is inferior to those obtained from animals
The protein isolated from which of the following plant foods is most comparable to animal
protein?
A. Oats
B. Wheat
C. Peas
D. Soybeans - answer✔D. Soybeans
Which of the following is true when discussing the possible ergogenic effect of specific amino
acids?
A. Arginine, lysine, and ornithine have been shown to enhance muscular development and
strength
B. Tryptophan appears to be ergogenic in short-term exercise tasks
C. Although some early research indicated BCAA supplementation improved performance in
marathon running performance of "slower" runners, most subsequent research it is not an
effective ergogenic aid
D. Most scientific research supports the fact that glutamine supplementation enhances immune
function during intense, prolonged training - answer✔C. Although some early research indicated
BCAA supplementation improved performance in marathon running performance of "slower"
runners, most subsequent research it is not an effective ergogenic aid
Because the human body cannot store excess nitrogen, - answer✔ammonia is formed from the
excess nitrogen and the liver converts it into urea, which is eventually eliminated by the kidneys.
When considering the functions of protein in human nutrition, which of the following is true?
A. The branched-chain amino acids constitute a significant amount of muscle tissue
B. The potential energy contained in protein can not be used in the human body
C. Protein is a major energy source for humans at rest
D. Tissue building takes precedence over energy production during periods of semistarvation -
answer✔A. The branched-chain amino acids constitute a significant amount of muscle tissue
Research suggests that protein may be a significant source of energy during - answer✔the latter
stage of prolonged endurance exercise, when protein could contribute up to 15 percent of the
total energy cost.
Which of the following statements concerning protein metabolism and exercise is NOT true?
A. Weight training promotes synthesis of the contractile muscle proteins
B. The effect of training in producing a positive protein balance during the recovery period
depends on an adequate supply of protein and Calories C. Aerobic exercise stimulates synthesis
of oxidative and mitochondrial enzymes
D. After exercise, protein balance is at the very most maintained, but is usually negative -
answer✔After exercise, protein balance is at the very most maintained, but is usually negative
The central fatigue hypothesis proposes that endurance exercise can lead to
__________________ . - answer✔decreased blood levels of BCAA; increased brain tryptophan;
increased brain serotonin
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