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1 | |
All B vitamins function as: |
| | A) | coenzymes. |
| | B) | electrolytes. |
| | C) | intrinsic factors |
| | D) | sources of energy. |
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2 | |
A 60-year-old man typically needs less thiamin than an active 18-year-old man because the older man's: |
| | A) | protein needs are less. |
| | B) | tissues have become saturated throughout the years. |
| | C) | excretions are less. |
| | D) | energy output is generally less. |
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3 | |
Thiamin is used for: |
| | A) | formation of polysaccharides. |
| | B) | formation of red blood cells. |
| | C) | energy release from nutrients. |
| | D) | collagen formation. |
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4 | |
Alcohol interferes greatly with ______________ absorption. |
| | A) | pantothenic acid |
| | B) | riboflavin |
| | C) | niacin |
| | D) | thiamin |
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5 | |
The riboflavin coenzyme is: |
| | A) | NADP. |
| | B) | NAD. |
| | C) | TPP. |
| | D) | FADH2. |
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6 | |
Which of the following statements is true for niacin? |
| | A) | It can be synthesized in the body from protein. |
| | B) | It is an antioxidant. |
| | C) | It is water-soluble and therefore safe to administer in large doses. |
| | D) | It can be used to successfully cure anemia. |
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7 | |
Pantothenic acid is a part of the structure of: |
| | A) | pyruvate. |
| | B) | cobalamin. |
| | C) | glycogen. |
| | D) | coenzyme A. |
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8 | |
Biotin is used for: |
| | A) | glucose absorption. |
| | B) | gluconeogenesis. |
| | C) | iron absorption. |
| | D) | emulsification. |
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9 | |
Vitamin B-6 participates in: |
| | A) | iron absorption. |
| | B) | amino acid and protein metabolism. |
| | C) | release of energy from minerals. |
| | D) | utilization of calcium and phosphorus. |
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10 | |
A deficiency of vitamin B-6 could lead to: |
| | A) | macrocytic anemia. |
| | B) | microcytic hypochromic anemia. |
| | C) | pernicious anemia. |
| | D) | all of the above. |
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11 | |
A deficiency of ______________ results in large, immature red blood cells, because of insufficient DNA production: |
| | A) | folate |
| | B) | niacin |
| | C) | riboflavin |
| | D) | vitamin C |
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12 | |
A high intake of folate is dangerous because it: |
| | A) | means the person is eating too much protein. |
| | B) | is easily stored in the body. |
| | C) | can "mask" pernicious anemia. |
| | D) | increases vitamin B-12 needs. |
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13 | |
Adequate intake of this vitamin will help reduce the risk of a neural tube defect in the fetus: |
| | A) | Folate |
| | B) | Vitamin B-12 |
| | C) | Vitamin C |
| | D) | Inositol |
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14 | |
______________ may be lacking in the diet of strict vegetarians (vegans). |
| | A) | Vitamin B-12 |
| | B) | Thiamin |
| | C) | Riboflavin |
| | D) | Niacin |
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15 | |
A deficiency of either of these two vitamins produces a similar type of anemia. |
| | A) | riboflavin and niacin |
| | B) | thiamin and riboflavin |
| | C) | pantothenic acid and biotin |
| | D) | vitamin B-12 and folate |
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16 | |
Irreversible nerve damage can occur with ______________ deficiency. |
| | A) | riboflavin |
| | B) | vitamin C |
| | C) | vitamin B-12 |
| | D) | thiamin |
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17 | |
Pernicious anemia is primarily caused by a defect or deficiency in: |
| | A) | vitamin B-12 intake. |
| | B) | vitamin B-12 excretion. |
| | C) | vitamin B-12 absorption. |
| | D) | all of the above. |
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18 | |
Choline is: |
| | A) | an enzyme. |
| | B) | part of bile. |
| | C) | part of lecithin. |
| | D) | a vitamin. |
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19 | |
The amount of vitamin C needed to prevent scurvy is about: |
| | A) | 10 mg/day. |
| | B) | 35 mg/day. |
| | C) | 90 mg/day. |
| | D) | 102 mg/day. |
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20 | |
The first symptom of scurvy is: |
| | A) | dental caries. |
| | B) | depression and anxiety. |
| | C) | pinpoint hemorrhages under the skin. |
| | D) | pernicious anemia. |
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21 | |
Vitamin C is essential in the synthesis of a hydroxyproline residue found in: |
| | A) | ascorbic acid. |
| | B) | collagen. |
| | C) | carnitine. |
| | D) | hemoglobin. |
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22 | |
Which of these meals lacks vitamin C? |
| | A) | corned beef, cabbage, fried potatoes, and milk |
| | B) | roast beef, carrots, noodles, and tea |
| | C) | spaghetti with tomato sauce, meatball, garlic bread, and diet soda |
| | D) | roast beef, broccoli, noodles, and coffee |
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23 | |
All of the following vitamins are linked to a reduced cancer risk except: |
| | A) | vitamin E. |
| | B) | carotenoids. |
| | C) | thiamin. |
| | D) | vitamin C. |
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24 | |
Which of the following factors are linked to an increased risk of cancer? |
| | A) | Physical activity |
| | B) | Obesity |
| | C) | Excess alcohol intake |
| | D) | B and C |
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25 | |
______________ cause an increase in cell turnover and therefore tend to encourage the growth of the altered cells. |
| | A) | Oncogenes |
| | B) | Epigenetic carcinogens |
| | C) | Protooncogenes |
| | D) | Genotoxic carcinogens |
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