The percentage of body weight that consists of water in a person of normal body weight is approximately:
a. 5% to 20%.
b. 20% to 35%.
c. 35% to 50%.
d. 50% to 65%.
D
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Which statement is NOT true regarding vitamin A's role in vision?
a. Rhodopsin is a pigment made up of opsin and retinal. b. When rhodopsin absorbs light, retinal is released from rhodopsin forming opsin. c. Vitamin A deficiency delays reformation of rhodopsin, resulting in night blindness. d. When light strikes rhodopsin, retinal changes its shape from trans to cis.
A child's appetite fluctuates after the age of:
a. nine months. b. one year. c. two years. d. three years.
A team of food scientists wants to develop a formula diet for newborns that is a nutritionally complete food that replaces human milk. To support normal infant development, the formula must have all of the following ingredients, except ________.
A. methionine B. phenylalanine C. homocysteine D. tryptophan
Aldosterone:
a. regulates iron levels b. is secreted by the hypothalamus c. none of these d. regulates sodium balance