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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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
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.