Chapter 12 - Micronutrient Function in Energy Metabolism Flashcards
A mineral that is required for activation or function of an enzyme is called
(a) collagen.
(b) an organophosphate.
(c) a coenzyme.
(d) a cofactor.
(d) a cofactor.
B vitamins, including thiamin, riboflavin, and niacin, are called the “energy” vitamins because they
(a) can be broken down to provide energy.
(b) are part of coenzymes needed for release of energy from carbohydrates, fats, and proteins.
(c) are ingredients in energy drinks such as Powerade.
(d) are needed in large amounts by competitive athletes.
(b) are part of coenzymes needed for release of energy from carbohydrates, fats, and proteins.
Which of the B vitamins us sensitive to and can be degraded by light?
(a) riboflavin
(b) thiamin
(c) niacin
(d) pantothenic acid
(a) riboflavin
Niacin can be synthesized in the body from the amino acid
(a) tyrosine.
(b) phenylalanine.
(c) tryptophan.
(d) glutamine.
(c) tryptophan.
A deficiency of iodine causes an enlargement of the thyroid called
(a) pellagra.
(b) goiter.
(c) beriberi.
(d) anemia.
(b) goiter.
Vitamin B-6 is an important coenzyme in the metabolism of
(a) fatty acids.
(b) bile acids.
(c) amino acids.
(d) pantothenic acid.
(c) amino acids.
Avidin, a component of raw egg whites, may decrease the absorption of
(a) biotin.
(b) iron.
(c) thiamin.
(d) riboflavin.
(a) biotin.
Pantothenic acid functions as part of
(a) coenzyme A.
(b) PLP.
(c) NADP.
(d) coenzyme Q.
(a) coenzyme A.
Choline is an important component of
(a) cholesterol.
(b) a phospholipid.
(c) an antioxident.
(d) proteins.
(b) a phospholipid.
Noodles, spaghetti, and bread are all made from wheat flour. This flour is enriched with all of the following nutrients except
(a) vitamin B-6.
(b) thiamin.
(c) niacin.
(d) iron.
(e) riboflavin.
(a) vitamin B-6.
