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The B vitamin that is needed in very small amounts in the diet but whose role as a coenzyme in the TCA cycle is critical in helping to replenish oxaloacetate is ____________________ .

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Which of the following is known to be toxic in large doses? 


A)  Niacin 
B)  Biotin 
C)  Riboflavin 
D)  Vitamin B12 
E)  Thiamin

F) All of the above
G) A) and C)

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Which of the following vitamins is not water soluble? 


A)  Biotin 
B)  Vitamin C 
C)  Vitamin K 
D)  Pantothenic acid 
E)  Folate

F) A) and B)
G) B) and E)

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Which of the following is not true of folate? 


A)  It comes in two forms. 
B)  It is involved in DNA synthesis. 
C)  Its bioavailability is the same whatever the source. 
D)  It is involved in converting vitamin B12 to one of its coenzyme forms. 
E)  It regenerates the amino acid methionine from homocysteine.

F) A) and E)
G) A) and D)

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A deficiency of riboflavin can cause a disease known as __________.


A)  riboflavinosis 
B)  ariboflavinosis 
C)  pernicious anemia 
D)  pellagra 
E)  beriberi

F) C) and D)
G) C) and E)

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MATCHING -Deficiency of this vitamin is induced by feeding raw egg whites


A) Pork
B) Corn
C) Milk and milk products
D) Folate
E) Biotin
F) Nicotinic acid (Niacin)
G) Choline
H) Anemia
I) Collagen
J) Thiamin
K) Antioxidants
L) Cheilosis
M) Vitamin B6
N) Vitamin B12
O) Tryptophan
P) Citrus fruits
Q) Vitamin C
R) Intrinsic factor
S) Riboflavin
T) Pantothenic acid

U) A) and L)
V) Q) and R)

Correct Answer

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Which of the following is true of thiamin? 


A)  It is easily destroyed by heat. 
B)  The average thiamin intake in the United States is inadequate. 
C)  It is sometimes referred to as vitamin B2. 
D)  Boiling is a good cooking method for conserving a food's thiamin content. 
E)  It works hand in hand with vitamin C.

F) A) and D)
G) C) and D)

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The type of anemia characterized by large,immature red blood cells and caused by deficiencies of folate and vitamin B12 is known as ____________________.

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macrocytic...

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Which of the following is an important function of vitamin B6? 


A)  It helps with carbohydrate, fatty acid, and amino acid metabolism. 
B)  It helps form collagen. 
C)  It carries activated carbon dioxide in energy metabolism, 
D)  It acts as an antioxidant. 
E)  It helps prevent neural tube defects.

F) C) and D)
G) All of the above

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Which of the following statements is true of choline? 


A)  It is sometimes referred to as vitamin H. 
B)  It is not a B vitamin but is grouped with the B vitamins anyway. 
C)  In most cases, the body can make enough choline to meet its needs. 
D)  Choline's only function is to make the phospholipid lecithin. 
E)  It is defined as a nonvitamin.

F) A) and C)
G) A) and E)

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With which B vitamin does folate have a close relationship? 


A)  Biotin 
B)  Thiamin 
C)  Vitamin B6 
D)  Ascorbic acid 
E)  Vitamin B12

F) C) and D)
G) A) and B)

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Which type of supplement is particularly toxic and has caused deaths in children? 


A)  Iron supplements 
B)  Calcium supplements 
C)  Vitamin E supplements 
D)  Vitamin D supplements 
E)  Folate supplements

F) A) and C)
G) A) and B)

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The term for the amount of niacin present in food-including the niacin that can theoretically be made from its precursor,tryptophan,present in the food-is ____________________.

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MATCHING -Nutrient whose deficiency causes beriberi


A) Pork
B) Corn
C) Milk and milk products
D) Folate
E) Biotin
F) Nicotinic acid (Niacin)
G) Choline
H) Anemia
I) Collagen
J) Thiamin
K) Antioxidants
L) Cheilosis
M) Vitamin B6
N) Vitamin B12
O) Tryptophan
P) Citrus fruits
Q) Vitamin C
R) Intrinsic factor
S) Riboflavin
T) Pantothenic acid

U) F) and L)
V) N) and O)

Correct Answer

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Substances like vitamin C that significantly decrease the adverse effects of free radicals on normal physiological functions are known as ____________________.

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Which amino acid is the precursor to niacin? 


A)  Lysine 
B)  Valine 
C)  Phenylalanine 
D)  Tryptophan 
E)  Glycine

F) C) and D)
G) C) and E)

Correct Answer

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What organ in the body contains more vitamin C than any other organ? 


A)  Lungs 
B)  Spleen 
C)  Adrenal glands 
D)  Pituitary gland 
E)  Kidneys

F) None of the above
G) B) and E)

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MATCHING -Greatest contributor of riboflavin for most people


A) Pork
B) Corn
C) Milk and milk products
D) Folate
E) Biotin
F) Nicotinic acid (Niacin)
G) Choline
H) Anemia
I) Collagen
J) Thiamin
K) Antioxidants
L) Cheilosis
M) Vitamin B6
N) Vitamin B12
O) Tryptophan
P) Citrus fruits
Q) Vitamin C
R) Intrinsic factor
S) Riboflavin
T) Pantothenic acid

U) A) and E)
V) A) and R)

Correct Answer

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MATCHING -Required for absorption of vitamin B12


A) Pork
B) Corn
C) Milk and milk products
D) Folate
E) Biotin
F) Nicotinic acid (Niacin)
G) Choline
H) Anemia
I) Collagen
J) Thiamin
K) Antioxidants
L) Cheilosis
M) Vitamin B6
N) Vitamin B12
O) Tryptophan
P) Citrus fruits
Q) Vitamin C
R) Intrinsic factor
S) Riboflavin
T) Pantothenic acid

U) G) and L)
V) I) and K)

Correct Answer

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MATCHING -Justly famous as a source of vitamin C


A) Pork
B) Corn
C) Milk and milk products
D) Folate
E) Biotin
F) Nicotinic acid (Niacin)
G) Choline
H) Anemia
I) Collagen
J) Thiamin
K) Antioxidants
L) Cheilosis
M) Vitamin B6
N) Vitamin B12
O) Tryptophan
P) Citrus fruits
Q) Vitamin C
R) Intrinsic factor
S) Riboflavin
T) Pantothenic acid

U) C) and S)
V) I) and N)

Correct Answer

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