11.Which of the following explains why B vitamin deficiencies lead : 1401636

11.Which of the following explains why B vitamin deficiencies lead : 1401636.


11.Which of the following explains why B vitamin deficiencies lead to lack of energy?

a.B vitamins are a source of kilocalories.

b.Absorption of carbohydrates and fats is decreased.

c.Oxygen for energy metabolism cannot be transported to the cells.

d.Coenzymes needed for energy metabolism are produced in insufficient amounts.

12.Which of the following describes the basic function of a coenzyme?

a.assist in the synthesis of an enzyme by attaching to RNA

b.assist in uptake of an enzyme by attaching to cell membranes

c.allow a chemical reaction to take place by attaching to an enzyme

d.allow for transport of an enzyme through the circulation by attaching to the enzyme

13.Which of the following functions has a requirement for thiamin?

a.blood coagulation

b.formation of red blood cells

c.energy release from energy-yielding nutrients

d.formation of epithelial cell mucopolysaccharides

14.Which of the following reactions is the primary chemical reaction in which thiamin participates as a coenzyme?

a.transfer of amine groups in the synthesis of amino acids

b.transfer of hydrogen atoms in the synthesis of erythrocytes

c.addition of methyl groups to compounds involved in energy metabolism

d.removal of one-carbon units from compounds involved in energy metabolism

15.Which of the following is the coenzyme form of thiamine?

a.thiamin phosphate

b.thiamin pyrophosphate

c.thiamin adenine dinucleotide

d.thiamin flavin mononucleotide

16.Beriberi results from a deficiency of which one of the following vitamins?



c.vitamin C

d.vitamin B12

17.Which of the following diets is most likely to lead to beriberi?

a.high intake of white rice

b.low intake of whole grains

c.high intakes of unrefined rice

d.low intake of enriched grains

18.The Wernicke–Korsakoff syndrome may be treated with supplements of which one of the following vitamins?



c.vitamin C

d.vitamin B12

19.Dry beriberi affects which one of the body’s systems?

a.the endocrine system

b.the reproductive system

c.the circulatory system

d.the nervous system

20.Approximately what percentage of alcoholics exhibit thiamin deficiency?

a.20 percent

b.40 percent

c.60 percent

d.80 percent



11.Which of the following explains why B vitamin deficiencies lead : 1401636

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