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Nutrition > water soluble vitamins > Flashcards

water soluble vitamins Flashcards

1
Q

thiamin population at risk

A

alcoholics

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1
Q

coenzyme

A
  • all b vitamins form coenzymes, small organic molecules that combine w inactive enzyemes to form active enzymes
    function in energy metabolism
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2
Q

thiamin deficiency

A

beriberi
wernicke korsakoff

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3
Q

riboflavin coenzyme

A

FMN and FAD

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4
Q

riboflavin name of def

A

ariboflavinosis

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5
Q

niacin coenzyme

A

NAD and NADP

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6
Q

niacin synthesis

A

body can synthesize from tryptophan (amino acid)

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7
Q

Niacin deficiency

A

pellagra

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8
Q

pantothenic acid

A

AcCoA

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9
Q

B6 storage site

A

stored in muscle tissue

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10
Q

B6 risk of toxicity

A

irreversible nerve damage

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11
Q

B6 anemia

A

microcytic hypochromic anemia (less hemoglobin in each RBC and smaller size of each RBC)

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12
Q

biotin synthesis

A
  • can be synthesized by microbes
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13
Q

biotin deficiency

A
  • ezcessive consumption of raw eggs
    avidin inactives biotin
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14
Q

choline functions

A

component of ppl
help carnitine move fatty acids into the cells
precursor for acetylcholine
help export VLDL from the liver

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15
Q

folate dietary sources

A

legumes, leafy greens, avocados, oranges

16
Q

folate vs folic acid

A

1 mcg food folate = 0.6 mcg folic acid taken w food

17
Q

folate as a coenzyme

A

DNA synthesis, converts vit B12 to coenzyme form

18
Q

folate deficiency during preg

A

spina bifida, anecephaly
neural tube defects
no development of spinal cord (20-28 days post conception)

19
Q

folate deficiency anemia

A

megaloblastic, macrocytic anemai

20
Q

vitamin b12 dietary sources

A

naturally found in only animal producst

21
Q

b12 populations at risk of deficiency

A

stored in liver
vegans
malabsorption
less stomach acid (old ppl)

22
Q

b12 absorption

A
  1. salivary glands produce R-protein
  2. HCL and pepsin release vit b12 bound to protein in food
  3. intrinsic factor secreted
  4. vit b links with IF
  5. vit b and IF compound absorbed into blood
  6. excess b12 stored in liver
23
Q

b12 anemia a deficiency causes

A

macrocytic anemia

24
Q

vitamin C sources

A

citrus, peppers, green veg

25
Q

vitamin C deficiency

A

scurvy

26
Q

vitamin C pop at high risk of def

A

smokers,

27
Q

vita C function

A

antioxidant, collagen

28
Q

vitamin C and non heme iron

A

enhances non heme iron absorption

29
Q

biotin

A

coenzyme in carboxylase reactions (incorporate CO2 in a substrate)

30
Q

thiamin coenzyme

A

TPP (thiamin pyrophosphate)

31
Q

food sources of thiamin

A

wide variety of small amt of foods

32
Q

vitamin b6 functions

A

PLP coenzyme involved in transamination
synthesis of heme

Nutrition (16 decks)

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