Which of the following statements about zinc is TRUE?
A) Fresh fruits and vegetables are the best food sources of zinc.
B) The RDA for zinc does not increase during pregnancy.
C) Zinc absorption is inhibited by vitamin C.
D) Zinc is critical for fetal protein synthesis, growth, and development.
Q. 2It is important for the fetus to store adequate iron during gestation because
A) iron derived from breast milk and formula is poorly absorbed.
B) infant formula is low in iron.
C) during the first month of life, the infant is unable to store iron.
D) breast milk is low in iron.
Q. 3The primary role of most of the B-vitamins is to
A) maintain acid-base balance. B) directly provide the body with energy.
C) act as coenzymes. D) maintain and repair body tissues.
Q. 4A potentially life-threatening consequence of low-carbohydrate intake is
A) ketoacidosis. B) glycogenesis. C) septic shock. D) anaphylaxis.
Q. 5What are provitamins?
A) inactive enzymes that become activated with the help of prooxidants
B) vitamins with overwhelmingly positive effects when taken in the correct amounts
C) inactive forms of vitamins that the body cannot use until they're converted to their active form
D) vitamins with antioxidant properties
Q. 6An organic molecule that combines with an enzyme to activate it is a
A) glucogenic amino acid. B) ketoacid.
C) mineral. D) coenzyme.
Q. 7Gretchen is determined to lose weight, and has been following a very low-carb diet and running a 12-mile loop six days a week. As her body's glycogen stores become depleted, what fuel provides energy to her brain?
A) triglycerides B) ketones C) fructose D) glucose
Q. 8Fetal demand for iron is highest during the
A) third trimester. B) first trimester.
C) entire gestational period. D) second trimester.
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