Contraceptives may contain _____.
a. estradiol only
b. luteinizing hormone only
c. estradiol only or progestin only
d. progestin only or a combination of estradiol and progestin
e. a combination of luteinizing hormone and progestin
Q. 2The component that distinguishes one amino acid from another is its:
a. side group.
b. backbone.
c. amino group.
d. acid group.
Q. 3What nutritional and health advice would a doctor likely give to a preconceptional couple?
a. The woman's physical activity should be limited to less than 30 minutes per day.
b. For vegetable intake, both should eat mostly dark green vegetables.
c. At least half of the woman's grain intake should be refined grains.
d. The woman's vitamin should take at least 10,000 IU of vitamin A per day.
e. The woman should consume 400 mcg of folic acid in addition to dietary folate.
Q. 4The basic building blocks of proteins are:
a. monosaccharides.
b. fatty acids.
c. ketones.
d. amino acids.
Q. 5Refined grain products are often fortified with _____ to decrease rates of _____.
a. folic acid; neural tube defects
b. iron; neural tube defects
c. iodine; early delivery
d. folic acid; early delivery
e. vitamin A; fetal heart abnormalities
Q. 6Protein is:
a. unique in that it is the only dietary component that contains oxygen.
b. important primarily because it builds strong bones and teeth.
c. made up of 20 different amino acids.
d. made up of branches of amino acids combined with branches of glucose.
Q. 7The risk of early delivery is increased by _____.
a. excessive vitamin A intake
b. iron deficiency
c. iodine deficiency
d. high maternal blood levels of lead
e. diabetes
Q. 8Proteins differ from the other energy nutrients because they contain:
a. glycerol.
b. carbon.
c. fatty acids.
d. nitrogen.