71.Which of the following vitamins is known to sustain substantial losses during processing of food?

a.biotin

b.niacin

c.vitamin B₁₂

d.pantothenic acid

72.Forms of vitamin B₆ include which one of the following?

a.pyridoxal

b.pyridoxine acid

c.pyrimidine

d.pyridoxamine pyruvate

73.Which of the following vitamins is stored primarily in muscle tissue?

a.biotin

b.folate

c.vitamin B₆

d.pantothenic acid

74.The chief symptoms of early vitamin B₆ deficiency include which of the following?

a.confusion and depression

b.muscle cramps and stiffness

c.profound fatigue and anemia

d.hyperactivity and shortness of breath

75.Which of the following vitamins is involved intensively in amino acid metabolism?

a.biotin

b.vitamin A

c.vitamin B₆

d.riboflavin

76.Which of the following is a function of vitamin B₆ in nutrition?

a.It participates in gluconeogenesis.

b.It helps to covert tryptophan to niacin.

c.It helps to make white blood cells.

d.It helps to make blood clot

77.Which of the following beverages contributes to the destruction and loss of vitamin B₆ from the body?

a.tea and coffee

b.soy milk

c.fruit juice

d.alcohol

78.What is the Tolerable Upper Intake Level for vitamin B₆?

a.100 mg

b.500 mg

c.1000 mg

d.10,000 mg

79.A common drug for the treatment of tuberculosis is known to markedly interfere in the metabolism of which of the following vitamins?

a.B₆

b.B₁₂

c.C

d.D

80.Irreversible nerve damage has been reported in people taking large doses of which of the following B vitamins?

a.vitamin B₁

b.vitamin B₂

c.vitamin B₆

d.vitamin B₁₂