Which of the following is a feature of lactate production during physical activity?
a. It is not a cause of muscle fatigue.
b. It may be rapidly converted to fatty acids by the liver.
c. It is produced in high quantities when ketone levels rise.
d. It accumulates in muscle at low levels of physical activity and is cleared rapidly at high levels of activity.
e. Lactate tends to remain in the muscle for 1 to 2 hours after exercise.
ANS: A
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Which of the following is NOT a benefit of breastfeeding for the infant?
A) The protein in breast milk is easy for the infant to digest. B) The antibodies and immune factors found in breast milk help to protect the infant from infection. C) The infant does not absorb the unhealthy levels of fat in breast milk. D) The DHA found in breast milk is essential to the development of the infant's nervous system and retina.
The RDA for niacin is _____ .
a. expressed in milligrams of niacin equivalents b. expressed in milligrams of niacin estimates c. higher for women than men d. the same for men and women e. difficult to meet unless the diet includes meat and other sources of the amino acid tryptophan
Which of the following functions is performed by members of all six classes of nutrients?
a) Provide energy b) Form structures c) Regulate body processes d) All of these functions are performed by each of the six classes of nutrients
Answer the following questions true (T) or false (F)
1. Supplies of amino acids that accumulate in the blood and cells are called amino acid pools. 2. Protein synthesis is regulated by genes. 3. Excess plant protein (not animal protein) is converted to muscle.