Women with PKU must avoid the essential amino acid phenylalanine and consume a diet low in protein because _____.
a. they lack enough stomach acid (HCl) to break down dietary proteins, including phenylalanine
b. they are allergic to phenylalanine and other protein-rich foods
c. they lack the enzyme necessary to convert phenylalanine to tyrosine
d. phenylalanine and protein-rich foods cause an accumulation of acid to build up in the blood
e. they are unable to incorporate phenylalanine into proteins, so it builds up in the blood, potentially blocking blood vessels
Q. 2The task of acquiring enough vitamin B12 may pose a problem to vegans because:
a. fibers in vegetables inhibit its absorption.
b. they lack the intrinsic factor.
c. it is found naturally only in animal-derived products.
d. deficiency may occur from excess intake of soy products.
Q. 3Lack of the enzyme phenylalanine hydroxylase diminishes conversion of _____ to _____.
a. fatty acids; tyrosine
b. glucose; phenylalanine
c. phenylalanine; insulin
d. phenylalanine; tyrosine
e. tyrosine; phenylalanine
Q. 4Someone who excludes meat from her diet but occasionally consumes poultry, fish, and shellfish is called a:
a. lacto-ovo vegetarian.
b. partial vegetarian.
c. ovo-vegetarian.
d. temporary vegetarian.
Q. 5Which characteristic applies to androgens?
a. produced only in the testes
b. produced only in the ovaries
c. derived only from carbohydrates
d. may stimulate the development and functioning of male sex organs
e. are a type of peptide hormone
Q. 6Dietary recommendations for women with PCOS emphasize _____.
a. whole grains, fruits, and vegetables high in antioxidants only
b. lean sources of protein only
c. high-glycemic index carbohydrate sources only
d. whole grains, fruits, vegetables high in antioxidants, and lean sources of protein
e. high-glycemic index carbohydrate sources and lean sources of protein
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