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What is a characteristic of water-soluble vitamins? a. Toxic levels are often reached. b. Long-term storage...

  1. What is a characteristic of water-soluble vitamins?

a. Toxic levels are often reached.

b. Long-term storage is available in body tissues.

c. Excess intake provides enhanced health benefits.

d. Deficiency symptoms take several months to a year to show up.

e. They are very unstable during food handling and processing.

  1. What is a correct pairing of the vitamin with an associated deficiency symptom?

a. Vitamin C - pellegra

b. Vitamin D – night blindness

c. Thiamin – eye problems

d. Folate – neural tube defects

e. Vitamin A – osteomalacia in adults


  1. Antioxidant vitamins prevent free radicals from attacking cells and causing damage by _____.

a. decreasing exposure to environmental pollutants such as cigarette smoke and ozone

b. eliminating the natural chemical reactions in the body by which free radicals are formed

c. stimulating the immune system to fight the free radicals off

d. repairing cell membranes and lowering LDL-cholesterol levels

e. neutralizing the free radicals and converting them back into stable oxygen molecules

  1. Vitamin A _____.

a. is a precursor of beta-carotene

b. is found in generous amounts in soybean, sunflower, and safflower oils

c. deficiency is definitively diagnosed when night blindness is present

d. is a common vitamin deficiency in the United States and Canada

e. helps to maintain healthy epithelial tissue

  1. What is the link between homocysteine, the B vitamins—folate, vitamin B12, and vitamin B6—and heart disease?

a. Low levels of the B vitamins and homocysteine have been correlated with an increased risk of heart disease in men.

b. Low levels of the B vitamins have been found in association with high homocysteine levels and an increased risk of fatal heart disease in men and women.

c. High homocysteine clears toxic buildup of the excess B vitamins reducing the risk of fatal heart disease in men and women.

d. High levels of B vitamins and homocysteine afford the greatest protection in lowering the risk of fatal heart disease in men.

e. Research studies of B vitamins and homocysteine regarding their effects on the risk for heart disease have been inconclusive.

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Answer #1

* . * * e. They are very unstable during food handling and processing. d. Neural tube defects e. Neutralizing the free radica

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