Which of the following substances is found in corn and contributes to the development of pellagra?
a. Avidin b. Leucine
c. Phytates d. Phenylalanine
Q. 2Which of the following is NOT among the characteristics of vitamin B12 nutrition in older people?
a. The RDA is the same as for younger adults
b. Older adults are advised to obtain most of their vitamin B12 from fortified foods and supplements
c. Up to 30 of those over 50 years of age are at risk of vitamin B12 deficiency due to atrophic gastritis
d. The DRI Committee recommends that older people increase their meat intake to provide adequate vitamin B12
Q. 3Which of the following is a feature of irritable bowel syndrome?
a. Abdominal discomfort is usually mild
b. Effective treatment includes peppermint oil
c. Constipation rather than diarrhea is the major adverse effect
d. A combination of stress plus certain foods is needed to trigger an attack
Q. 4While researching your southern family history, you find that your grandmother had a sister who died fairly young. The symptoms leading up to her death included diarrhea, dermatitis, and dementia. Because the family led a poor, corn-farming existence, you suspect this relative died of
a. scurvy. b. cancer.
c. pellagra. d. beriberi.
Q. 5John is 60 years old and has been experiencing numbness in his hands for the past 3 months. His doctor suspects that John is not producing enough hydrochloric acid and intrinsic factor and encourages him to eat more foods containing vitamin B12 . What is wrong with this suggestion?
a. People missing intrinsic factor cannot digest foods containing vitamin B12 and will develop diarrhea
b. Intrinsic factor is not associated with vitamin B12 and eating more foods containing it would have no effect on John's health
c. It is improbable that a lack of hydrochloric acid production and intrinsic factor are associated with the numbness that John is experiencing
d. Because John has no intrinsic factor, he cannot efficiently utilize vitamin B12 from natural sources and would need a vitamin B12-fortified food or supplement
Q. 6What organ is affected by colitis?
a. Stomach b. Pancreas
c. Gall bladder d. Large intestine
Q. 7Tryptophan can be used in the body to synthesize
a. FAD. b. biotin.
c. niacin. d. inositol.
Q. 8Vitamin B12 deficiency in the elderly is least likely to occur from
a. intestinal bacterial overgrowth. b. insufficient intake of vitamin B12.
c. reduced output of intrinsic factor. d. reduced output of hydrochloric acid.
Q. 9Inflammation of the large intestine is known as
a. colitis. b. indigestion.
c. hemorrhoiditis. d. acid dysregulation.
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