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Which of the following criteria qualifies a compound as a vitamin?
A. The compound is necessary for health, but the body is unable to synthesize enough of the compound to maintain health.
B. The compound prevents chronic disease and cancer.
C. The compound is best absorbed if taken in supplement form.
D. The body is unable to synthesize the compound.
Water-soluble and fat-soluble vitamins differ in which way?
A. Water-soluble vitamins are best absorbed in the presence of dietary fat.
B. Fat-soluble vitamins have much less potential for toxicity.
C. Water-soluble are less likely to be toxic.
D. Water-soluble vitamins are stored, whereas fat-soluble vitamins are excreted readily.
Which of the following is most likely to result in vitamin toxicity if consumed daily over a long period of time?
A. Vitamin A supplements
B-vitamin complex
C. Fortified breakfast cereals
D. Spinach, kale, and other greens
Why is taking excess amounts of fat-soluble vitamins more likely to cause toxicity than taking excesses of water-soluble vitamins?
A. In general, excesses of fat-soluble vitamins cannot be excreted as easily as water-soluble vitamins.
B. In general, water-soluble vitamins are more likely to be stored in the body than fat-soluble vitamins.
C. The body has higher requirements for water-soluble vitamins.
D. The body has higher requirements for fat-soluble vitamins.
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