Question 1

Name the 4 Ds of pellagra.What causes pellegra? How is the consumption of corn related to pellagra?

Accepted Answer

The 4 Ds of pellagra are Dermatitis, Dia...

Question 2

Choline is required for the synthesis of

Accepted Answer

A)   glycogen and many proteins.
B)   phospholipids and lipoproteins.
C)   homocysteine and methionine.
D)   collagen and connective tissue.E) C) and D)
F) A) and D)

Question 3

A major role of vitamin B-12 in cellular metabolism is

Accepted Answer

A)   transfer of a methyl group to the amino acid homocysteine, forming the amino acid methionine.
B)   transfer of a methyl group to the pyrimidine uracil, forming the pyrimidine thymine.
C)   in transamination reactions, allowing the synthesis of nonessential amino acids.
D)   as an electron acceptor, allowing function of the electron transport chain.E) A) and B)
F) A) and C)

Question 4

Thiamin,niacin,and riboflavin work together in important biochemical pathways that

Accepted Answer

A)   synthesize collagen.
B)   control the visual process.
C)   promote absorption of calcium.
D)   release energy from carbohydrate, fat, and protein.E) None of the above
F) All of the above

Question 5

The riboflavin coenzymes have _______ functions in cellular metabolism.

Accepted Answer

A)   antioxidant
B)   chelating
C)   oxidation and reduction
D)   single carbon group transferE) None of the above
F) B) and C)

Question 6

Which of the following foods represents the most nutrient-dense source of riboflavin?

Accepted Answer

A)   low-fat milk
B)   applesauce
C)   whole wheat bread
D)   green leafy vegetablesE) None of the above
F) A) and B)

Question 7

Niacin is necessary in the diet to prevent the disease called

Accepted Answer

A)   pernicious anemia.
B)   beriberi.
C)   scurvy.
D)   pellagra.E) B) and C)
F) All of the above

Question 8

A strict vegan diet may lack

Accepted Answer

A)  vitamin B-12.
B)  vitamin C.
C)  vitamin A.
D)  niacin.E) A) and C)
F) A) and D)

Question 9

To calculate the DFE for the diet,multiply total synthetic folic acid intake by ____; add that value to the total food folate.

Accepted Answer

A)   1.7
B)   2.5
C)   4.0
D)   None of these choices are accurate.E) None of the above
F) A) and B)

Question 10

A deficiency of thiamin that affects the cardiovascular,muscular,nervous,and gastrointestinal systems is called

Accepted Answer

A)   megaloblastic anemia.
B)   pellagra.
C)   scurvy.
D)   beriberi.E) A) and C)
F) All of the above

Question 11

The RDA for vitamin C is increased by ________mg/day for smokers.

Accepted Answer

A)   10
B)   60
C)   35
D)   1000E) A) and B)
F) None of the above

Question 12

Vitamin B-12 is absorbed in the

Accepted Answer

A)   stomach.
B)   duodenum.
C)   jejunum.
D)   ileum.E) None of the above
F) C) and D)

Question 13

The vitamin that prevents beriberi is

Accepted Answer

A)   vitamin B-12.
B)   riboflavin.
C)   niacin.
D)   thiamin.E) C) and D)
F) All of the above

Question 14

________ are very large immature red blood cells,which are formed as a result of folate deficiency.

Accepted Answer

A)   Erythrocytes
B)   Megaloblasts
C)   Lymphocytes
D)   PlateletsE) None of the above
F) B) and C)

Question 15

Supplemental vitamin B-6,vitamin B-12,and folic acid can reduce blood levels of homocysteine,but have not been proven to reduce the risk of cardiovascular disease.

Accepted Answer

A) True 
 B)False

Question 16

Pernicious anemia is treated most often by

Accepted Answer

A)   a diet high in milk and dairy products.
B)   regular intramuscular injection of vitamin B-12.
C)   oral supplementation of iron.
D)   eating liver three times a week.E) None of the above
F) B) and D)

Question 17

In a dietary deficiency of folate,there are decreasing numbers of mature red blood cells to carry the oxygen from the lungs to the tissues.This condition is known as

Accepted Answer

A)   achlorhydria.
B)   megaloblastic anemia.
C)   ariboflavinosis.
D)   hemorrhagic disease.E) A) and B)
F) B) and C)

Question 18

Research shows that supplemental vitamin B-6 is most likely to aid those experiencing

Accepted Answer

A)   nausea associated with pregnancy.
B)   pellagra.
C)   premenstrual syndrome.
D)   depression.E) B) and D)
F) A) and C)

Question 19

Red blood cells turn over every

Accepted Answer

A)   20 minutes.
B)   20 hours.
C)   2 months.
D)   120 days.E) None of the above
F) All of the above

Question 20

A biochemical function of THFA (tetrahydrofolate) is

Accepted Answer

A)   transfer of NH2 groups from amino acids to CO2 to form urea.
B)   transfer of hydrogens and electrons through the various energy-yielding pathways.
C)   removal of CO2 from various intermediates in the citric acid cycle.
D)   accepting or donating single-carbon molecules in various metabolic pathways.E) A) and B)
F) A) and C)

Exam 13: Water-Soluble Vitamins

Supplemental vitamin B-6,vitamin B-12,and folic acid can reduce blood levels of homocysteine,but have not been proven to reduce the risk of cardiovascular disease.

Correct AnswerverifiedShow Answer

Thiamin,niacin,and riboflavin work together in important biochemical pathways that

Correct AnswerverifiedShow Answer

Name the 4 Ds of pellagra.What causes pellegra? How is the consumption of corn related to pellagra?

Correct AnswerAnswered by ExamLex AIThe 4 Ds of pellagra are Dermatitis, Dia...View AnswerShow Answer

The RDA for vitamin C is increased by ________mg/day for smokers.

Correct AnswerverifiedShow Answer

Research shows that supplemental vitamin B-6 is most likely to aid those experiencing

Correct AnswerverifiedShow Answer

A deficiency of thiamin that affects the cardiovascular,muscular,nervous,and gastrointestinal systems is called

Correct AnswerverifiedShow Answer

In a dietary deficiency of folate,there are decreasing numbers of mature red blood cells to carry the oxygen from the lungs to the tissues.This condition is known as

Correct AnswerverifiedShow Answer

Vitamin B-12 is absorbed in the

Correct AnswerverifiedShow Answer

Niacin is necessary in the diet to prevent the disease called

Correct AnswerverifiedShow Answer

Choline is required for the synthesis of

Correct AnswerverifiedShow Answer

Pernicious anemia is treated most often by

Correct AnswerverifiedShow Answer

Which of the following foods represents the most nutrient-dense source of riboflavin?

Correct AnswerverifiedShow Answer

The riboflavin coenzymes have _______ functions in cellular metabolism.

Correct AnswerverifiedShow Answer

________ are very large immature red blood cells,which are formed as a result of folate deficiency.

Correct AnswerverifiedShow Answer

Red blood cells turn over every

Correct AnswerverifiedShow Answer

A strict vegan diet may lack

Correct AnswerverifiedShow Answer

A major role of vitamin B-12 in cellular metabolism is

Correct AnswerverifiedShow Answer

To calculate the DFE for the diet,multiply total synthetic folic acid intake by ____; add that value to the total food folate.

Correct AnswerverifiedShow Answer

A biochemical function of THFA (tetrahydrofolate) is

Correct AnswerverifiedShow Answer

The vitamin that prevents beriberi is

Correct AnswerverifiedShow Answer

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