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Human Nutrition > Water Soluble Vitamins (Exam 2) > Flashcards

Water Soluble Vitamins (Exam 2) Flashcards

1
Q

what is ascorbic acid

A

vitamin c

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2
Q

can humans synthesize vitamin c

A

no

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3
Q

what does vitamin c protect cells in the body from

A

free radical damage

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4
Q

what does vitamin c help regenerate

A

other antioxidants

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5
Q

what does vitamin c produce

A

collagen

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6
Q

what does vitamin c help repari and maintain

A

cartilage and bone

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7
Q

what does vitamin c help from in the blood relation

A

capillary blood vessels

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8
Q

what does vitamin c help the body absorb

A

plant sources of iron

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9
Q

what is a toxicity of vitamin c mean

A

gi distress and diarrhea can be caused by several large dosages during a day

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10
Q

some sources of vitamin c

A

asparagus, papaya, oranges, cantalop, cauliflower, broccoli, brussel sprouts, green peppers, grapefruit, etc.

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11
Q

what source is vitamin c found in foods

A

as ascorbic acid

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12
Q

what can destroy vitamin c through oxidation

A

heat, light, and alkaline solutions

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13
Q

what is collagen made of and how is it made

A

it is three polypeptide chain
with iron as a cofactor, vitamin c helps to synthesize collagen

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14
Q

what is caritine essential for

A

the transports of long chain fatty acids from the cell cytosol into the mitochondria for beta oxidation

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15
Q

carnitine, is it a protein?

A

non- protein, yet does have nitrogen

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16
Q

what is norepinephrine

A

a neurotransmitter/hormone released to respons to stress

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17
Q

what does an antioxidant mean

A

that it helps protect cells from damage caused by free radicals

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18
Q

free radicals def

A

molecular structure with an unpaired electron

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19
Q

what are some causes of free radicals

A

smoking, exposure to sun, xrays

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20
Q

what does vitamin c do to immune function

A

it enhances it by promoting movement and reproduction of immune cells

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21
Q

what does vitamin c do to iron absorption

A

it enhances it

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22
Q

scury summary

A

from a prolonged absence of vitamin c
which can lead to fatigue, lack of energy, being uncomfy and diminishing body structures ruptured bv, impaired healing, bad bone health, etc

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23
Q

what are all the b vitamins

A

thiamin(1), riboflavin (b2), Niacin (b3), Pantothenic acid (b5), Pyridoxine (b6), Biotin (b7), Folate (b9), Cobalamin (b12)

24
Q

roles of b1

A

assists w many body functions
energy metabolism
muscle contration (nerve signals)
Mediates cell growth and development

25
Q

What channels does b1 regulate

A

sodium channels

26
Q

top sources of b1

A

pork loin
salmon
black beans
whole grain wheat slice

27
Q

what destroys b1

A

a ph >8
cooking
some chemicals

28
Q

what activates b1

A

magnesium

29
Q

what is beriberi summary

A

caused by chronically low b1 leveles which leads to muscle weakness, enlarged heart, etc

30
Q

some sources of b2

A

low fat yogurt, eggs, meat, legumes, green veggies, bran cereal, etc

31
Q

what destroys b2

A

sunlight

32
Q

what is aniboflavinosis

A

a riboflavin, b2, deficiency in humans, rare, painful lesions, inflamed tougue, bloody oral cavity

33
Q

b3 sources

A

fish and meats
pasta

34
Q

is b3 easily destroyed

A

no , faitly stable to any exposures

35
Q

what is pellagra

A

niacin, b3, defieciency caused 4 Ds
dermatitis
dementia
diarrhea
death

36
Q

sources of b5

A

present in virtually all plant and animal foods

37
Q

destruction of b5

A

easily destoyed by freezing and heating
in acidic and alkaline solutions

37
Q

burning feet syndrome

A

b5 deficiency

38
Q

roles of b6

A

amino acid metablism
heme synthesis
carnitine synthesis
glycogen phosphorlylase activity needs b6

38
Q

sources of b6

A

mainly from plant foods but also white and dark chx meat

38
Q

stable aspect of b6
destruction aspect of b6

A

stable with cooking
destroyed with prolonged heating

39
Q

b6 deficiencies lead to what

A

rashes, weakness, fatigue, seizures, anemia, etc

40
Q

biotin , b7 sources

A

beef liver
eggs yolk
peanuts
almonds
salmon

41
Q

is b7 easily destroyed

A

no, very stable

42
Q

what may inactivate biotin

A

Ultraviolet radiation

42
Q

roles of b7

A

energy metabolism, human genes transcription
cell cycle

43
Q

is a b7 deficiency rare

A

very rare
when does it is lethargy, seizures, dermatitis, etc.

44
Q

sources of b9

A

mushrooms and spinach
brussel sprouts and broccoli
peanuts, legumes

45
Q

roles of b9 folate

A

amino acid metablism

46
Q

what destroys b9

A

heat, oxidation, and uv light

47
Q

is raw b9 or cooked b9 better

A

raw
also 50-80 percent of it is lost with food processing

48
Q

roles of b12, cobalamin

A

coenzyme for the synthesis of methlonine
metablism of fatty acids
maturation of rbc

49
Q

what is megablastic macrocytic anemia

A

fewer rbc
low plasma levels

50
Q

sources of b12

A

beef steak, fish, shellfish

51
Q

is b12 easily destroyed

A

nah its faily stable and resitance to light, heat, and oxidation

52
Q

what is cobalamin the coenzyme for

A

the synthesis of methionine

Human Nutrition (6 decks)

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