• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/16

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

16 Cards in this Set

  • Front
  • Back
basic functions of nutrition
Antioxidants
H+/e- donors/acceptors (Cofactors)
Hormones
Coenzymes
Gene transcription elements
water soluble vitamins
absorbed in blood
transported freely
very little storage
excreted regularly in urine
less likely to be toxic
require frequent doses
fat soluble vitamins
absorbed in lymph
transported by carriers
stored in fat
very little excreted
more likely to be toxic
require periodic doses
folate
DNA synthesis and cell division
red blood cell maturation
amino acid metabolism (homocysteine to methionine)
works with B12
found in fortified grains, leafy green vegetables, legumes, seeds, liver
folate deficiencies
megaloblastic anemia (results from impaired DNA synthesis in red blood cell production, cells are unable to divide)
neural tube defect (spina bifida, Birth defects that affect the neural tube, the structure that becomes the brain and spinal cord)
anencephaly (the accumulation of too much cerebral spinal fluid in the spaces of the brain)
vitamin B12
activates folate coenzyme for DNA synthesis
helps maintain proper nerve function
found in Meat, poultry, fish, eggs, fortified soy milk, fortified cereal
pernicious anemia
B12 deficiency due to poor absorption (decreases in stomach acid & intrinsic factor)
symptoms include megaloblastic anemia & neurological impairment
thiamin
essential in carbohydrate metabolism and neural function
found in Whole grain, fortified, or enriched grain products, moderate amounts in all nutritious foods, specially high in pork
thiamin deficiencies
Wernicke-Korsakoff's syndrome (heavy alcohol consumption with little food consumption leads to enlarged heart, muscular weakness, short-term memory loss, edema, weight loss)
Beriberi (wet: damage to cardiovascular system, edema. dry: damage to nervous system, muscle weakness)
riboflavin
metabolism of carbohydrates, amino acids, lipids
supports cellular antioxidant protection
destroyed by UV light but heat stable
found in dairy products, whole grains, fortified or enriched grains, liver, dark green leafy vegetables are high per calorie
riboflavin deficiency
ariboflavinosis (mouth/tongue inflammation, dermatitis, confusion)
niacin
required for biosynthesis of NADH/NADPH
needed for all aspects of metabolism (especially metabolism of glucose, fat, alcohol)
found in Milk, eggs, meat, poultry, fish; whole-grain, fortified and enriched grain products, nuts, and all protein-containing foods
pellagra
niacin deficiency
dementia, diarrhea, dermatitis, death
Niacin in corn has poor absorption as it binds to complex carbohydrate (~70%)
Corn high in leucine interferes with the tryptophan-to-niacin conversion
niacin toxicity
niacin rush (Niacin Rush: a temporary burning/itching sensation when a person takes a 3-4 times RDA of nicotinic acid from supplement)
vitamin B6
amino acid/fatty acid metabolism
Growth, cognitive development, depression, immune function, fatigue, and steroid hormone activity
found in Meats, fish, poultry, potatoes and other starchy vegetables, legumes, non-citrus fruits, fortified cereals, liver, soy products
vitamin C
collagen synthesis as a cofactor
water-soluble antioxidant
increase iron absorption in intestine