81.Which of the following is the minimum daily amount of ascorbic acid that will prevent the appearance of scorbutic symptoms in human beings?

a.10 mg

b.30 mg

c.50 mg

d.60 mg

82.Which of the following is the amount of vitamin C needed daily to raise blood ascorbic acid concentrations to a maximum?

a.10 mg

b.75 mg

c.125 mg

d.200 mg

83.Which of the following is an early sign of vitamin C deficiency?

a.bleeding gums

b.pernicious anemia

c.appearance of a cold

d.hysteria and depression

84.In Canada, what is the adult RDA for vitamin C?

a.10–20 mg

b.50–60 mg

c.75–90 mg

d.100–135 mg

85.People who smoke require additional vitamin C in which of the following amounts?

a.5 mg

b.35 mg

c.100 mg

d.200 mg

86.Which of the following symptoms is indicative of a deficiency of vitamin C?

a.hair loss

b.muscle spasms

c.bilateral symmetrical dermatitis

d.subcutaneous pinpoint hemorrhages

87.People with the condition known as iron overload may be adversely affected from taking supplements of which of the following nutrients?

a.niacin

b.retinol

c.cobalamin

d.ascorbic acid

88.Which of the following food groups is a rich source of vitamin C?

a.milk group

b.meat group

c.fruit group

d.bread–cereal group

89.Which of the following terms is used to describe the outcome of a diagnostic test that apparently shows that you have mononucleosis when in reality you do not?

a.true positive

b.true negative

c.false positive

d.false negative

90.Which of the following terms describes the outcome of a diagnostic test that apparently indicates that you do not have an infection when in reality you do?

a.true positive

b.true negative

c.false positive

d.false negative