Water Soluble Vitamins Vitamin C

Question 1

Is vitamin C essential for all mammals

Answer 1

yes! essential for humans, primates, fruit bats, guinea pigs and a few birds

Question 2

what are the functions of vitamin c

Answer 2

connective tissue
coenzyme
antioxidant

Question 3

who has the highest vitamin c requirement

Answer 3

smokers = RDA + 35mg

regularly men = 90 women = 75

Question 4

what are some signs or symptoms of vit C deficiency

Answer 4

easy bruising
poor wound healing
bleeding gums
pinpoint hemorrhages
scurvy
bone fracture
tooth loss

Question 5

what are the 4 Hs of scurvy

Answer 5

hemorrhagic signs
hyperkeratosis of hair follicles
hypochondriasis
hematoligic (imparied collagen synthesis and dec iron absorption)

Question 6

what are the sources of vitamin C

Answer 6

bell peppers
citrus fruits and fruit juices
broccoli
dark leafy green veggies

Question 7

what causes vitamin C to be unstable

Answer 7

oxygen
heat
basic pH

Question 8

what effect does cooking have on vitamin C

Answer 8

easily extracted in water, so prepared veggies refrigerated for 24 hours has lost 50% of vitamin C
frozen contains more vit C than fresh

Question 9

describe connective tissue function

Answer 9

required for collagen syntehsis

hydrodxylation of proline and lysine

Question 10

coenzyme function

Answer 10

metabolically active tissues
required for: conversion dopamine to norepinephrine, synthesis of carnitine, metabolism of folate and typtophan, absorption of nonheme iron

Question 11

antioxidant function

Answer 11

able to donate H

can regenerate vitamin E