Nutrition Final 4 Flashcards

1
Q

What are the 4 fat soluble vitamins

A

A, D, E, K

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2
Q

What are the water soluble vitamins

A

Ascorbic acid, biotin, choline, folacin, myoinositol, niacin, pantothenic acid, riboflavin, thiamin, B6, B12

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3
Q

Fat soluble vitamins

A

stored in fat, can reach toxicity levels

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4
Q

Water soluble vitamins

A

will no accumulate in the body, easily removed from the body, stores are very fluid

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5
Q

What was the first vitamin to be discovered

A

Vitamin B1 or thiamin

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6
Q

What disease is associated with Thiamin deficiency

A

Beriberi

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7
Q

Functions of thiamin

A

coenzyme for all enzymatic decarboxylation of alpha keto acids (pyruvate to acetate), vital role in nerve function, role in insulin biosynthesis

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8
Q

Symptoms of deficiency in thiamin

A

BERIBERI, swollen lower legs, paralysis, cardiovascular damage, head bent backwards, polioencephalomalacia PEM

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9
Q

Toxicity of thiamin

A

typically non toxic

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10
Q

Second B vitamin to be discovered

A

Riboflavin or vitamin B2

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11
Q

Three forms of riboflavin

A

free riboflavin, FMN (flavin mononucleotide), FAD (flavin adenine dinucleotide)

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12
Q

Functions of riboflavin

A

required as part of many enzymes to utilize (carbohydrates, fats, and proteins), amino acid metabolism, flavoprotein functions, fat metabolism

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13
Q

Symptoms of deficiency of riboflavin

A

unable to synthesize riboflavin within tissue, alopecia, rough hair coat, lowered feed rate, curled toe paralysis

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14
Q

Symptoms of toxicity of riboflavin

A

little issue or toxicity

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15
Q

Niacin or third B vitamin

A

chemically one of the simplest vitamins

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16
Q

2 coenzymes of niacin

A

NAD and NADP

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17
Q

tryptophan niacin conversion

A

tryptophan is a precursor for niacin synthesis, ability of tryptophan to meet metabolic requirement for niacin depends on amount available of tryptophan and efficiency of conversion

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18
Q

Symptoms of niacin deficiency

A

Pellagra (dermal lesions), weakness, digestive disorders

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19
Q

Symptoms of toxicity of niacin

A

itching, heat sensation, nausea, vomiting

20
Q

Three compounds of vitamin B6

A

Pyridoxol
Pyridoxal
Pyridoxamine

21
Q

Functions of vitamin B6

A

plays an essential role in interaction of the metabolism of amino acid, carbohydrate, fatty acids, citric acid cycle
involved in almost all reactions involving amino acid metabolism
conversion of amino acid to keto acid

22
Q

Deficiency symptoms of vitamin B6

A

grow very slowly, epileptic like convulsions, nitrogen rentention

23
Q

toxicity of vitmain B6

A

Very little

24
Q

Functions of pantothenic acid

A

functions as a constituent of two coenzymes (coenzyme a and ACP), involved in over 100 metabolic pathways, coenzyme A

25
Q

Deficiency symptoms of pantothenic acid

A

goose stepping of hind legs, impairment of adrenal function, reduced growth

26
Q

Toxicity of pantothenic acid

A

no toxicity reported

27
Q

Function of biotin

A

essential coenzyme in metabolism, essential part of interconversion of carb to protein and protein to fat, maintains normal blood glucose levels

28
Q

Biotin is a carboxyl carrier for four carboxylase enzymes

A
  1. pyruvate carboxylase
  2. acetyl coa carboxylase
  3. propionyl coa carboxylase
  4. 3 methylcrotonyl coa carboxylase
29
Q

Symptoms of deficiency of biotin

A

dry rough cracked skin, alopecia, ulceration of skin

30
Q

Three structures of folacin

A

glutamic acid, p aminobenzoic acid, pteridine nucleus

31
Q

Functions of folacin

A

transfers single carbon units in various reactions, specific single carbon transfer

32
Q

Deficiency of folacin

A

leukopenia, anemia

33
Q

Functions of vitamin B12

A

essential part of several enzyme systems for basic metabolic functions, red blood cell synthesis

34
Q

Deficiency of vitamin B12

A

closely related to cobalt deficiency, anemia, slowed growth

35
Q

Functions of choline

A

metabolic essential for building and maintaing cell structure, fat metabolism in liver, essential for formation of acetylcholine

36
Q

Deficiency symptoms of choline

A

spraddled leg condition, poor confirmation, fatty liver

37
Q

toxicity of choline

A

salivation, trembling, jerking, convulsions

38
Q

what is ascorbic acid closely related to

A

vitamin c

39
Q

two forms of ascorbic acid

A

reduced ascorbic acid, oxidized dehydroascorbic acid

40
Q

functions of ascorbic acid

A

involved in biochemical processes that involve donations of one or two electrons, collagen synthesis, antioxidant and immunity, carnitine synthesis

41
Q

Deficiency and toxicity of ascorbic acid

A

not a common deficiency, limited issue with toxcitiy

42
Q

Which fat soluble vitamin is considered the most important

A

Vitamin A

43
Q

3 forms of vitamin A

A

retinol, retinal, retinoic acid

44
Q

all trans retinol is considered to have ___ biological activity

A

100%

45
Q

Functions of vitamin A

A

normal night vision, normal epithelial cells, normal bone growth and remodeling,