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32 Cards in this Set

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Thiamine (B1) functions (4)

1) TDP: Required magnesium-coordinated coenzyme for decarboxylation of alpha ket acids


2) synthesis of pentoses and NADPH


3) converts carbs to CO2 and energy


4) TTP: normal function of NS, skeletal muscles, and heart

Riboflavin (B2) functions (5)




(why does B6 needs B2?)

1) Precursor for synthesis of FAD and FMN;


2) required for function of the ETC and redox reactions;


3) formation of Acetyl CoA


4) needs B2 to covert B6 to its active form (FMN)


5) synthesis of folate and catabolism of choline

Niacin (B3) functions (5)

1) AA, CHO, and fat metaboism


2) NAD: releases adenosine diphosphate ribose to repair DNA


and calcium mobilization


3) NADPH: required activation of folate


4) lipids/cholesterol metabolism


5) NE and epinephrine synthesis

Folate functions (2)

1) prevents neural tube defects; needed for 2) synthesis of deoxythymidine for DNA replication


accepting one-carbon groups generated from amino acid metabolism


Bioavailability increases when ingested as folic acid

Biotin functions (3)




(also, what can reduce biotin absorption)

1) Metabolism of carbs, fats, and protein ( acetyl coa, pyruvate, and propionyl coa carboxylase)


2) CO2 transport


3) Healthy hair and nails




Poultry eggs contain avidin which reduces biotin absorption

Pantothenic acid (B5) functions (3)

1) sterol synthesis Utilization of fats and carbs,


2) adrenal hormones and metabolism of RBCs


3) coenzyme A--fatty acid energy synthesis (release)



Pyridoxine (B6) functions




what is the compound to perform coenzyme functions?

1) Protein and amino acid metabolism,


2) neurotransmitter synthesis,


3) immune system function, hormone synthesis, 4) heme synthesis, differentiation of RBCs


Must be phosphorylated to pyridoxal-5'-phosphate (PLP) to perform coenzyme functions

Cobalamin (B12) functions (2)




what limits B12 absorption?

1) Healthy blood formation,




2) NS function




Inadequate intrinsic factor limits B12 absorption in small intestine

Vitamin C (ascorbic acid) functions (5)

1) Collagen,


===proline-->hydroxyproline-->collagen


2) carnitine, and neurotransmitter synthesis


synthesis of proline, tryptophan, dopamine, and tyrosine,


3) iron absorption,


4) convert cholesterol into bile acid


5) protect vitamin E and folic acid









Vitamin A functions

1) Vision (Retinaldehyde)


2) normal growth and reproduction (retinol)


3) epithelial integrity (retinoic acid)


4) wound healing, (reverse the inhibitory effects of corticosteroids on wound healing.) resistance to infections, ,


prevention of cancer (promotes cell differentiation)

Vitamin D functions

(with its active form of 1,25-dihydroxyvitamin D)




Required for intestinal absorption of calcium and phosphorus, formation of bone and teeth, proper bone remodeling




pleiotropic effect




pleiotropic effect




Ingested as cholecalciferol; converted to 25-hydroxycholecalciferol in the liver

Vitamin E functions

1) Major intramembranous antioxidant that prevents oxidation


2) maintain cell memebrane integrity


3) works along with selenium and vit c against oxidation






reduces oxidized vitamin C and beta-carotene; may prevent cancer and CV disease; needed for immune function and reproductive function

Vitamin K functions

#Required cofactor in formation of clotting factors


#bone health


#cosusbstrate in the posttranslational carboxylation of proteins at designated glutamic acid residues (act as clotting factor)

Calcium functions

Blood clotting, release/storage of NT/hormones, uptake/binding of amino acids, absorption of B12, gastrin secretion, nerve impulses and muscle contractions, regulation of BP, primary mineral component of skeleton




Calcium citrate is most bioavailable form

Chlorine function

main extracellular anion and primary regulator of fluid/electrolyte acid-base balance

Magnesium functions



Which is most bioavailable?

Stabilizes ATP structure, enhances calcium metabolism, major mineral component of bone and tooth architecture, required cofactor in over 300 enzyme reactions, acid-base balance, parathyroid hormone function, heart beat regulation



Magnesium citrate most bioavailable form (least prone to bowel upset)

Phosphorus functions

Regulation of energy metabolism, provides large amounts of biochemical energy in forms of ATP, ADP, GTP, cAMP, major component of bone/tooth structure, component of membrane phospholipids, required for proper kidney function

Potassium functions

Major intracellular cation electrolyte, primary regulator of cellular osmotic pressure, cell membrane potential/charge, normal renal function, acid-base balance

Sodium functions

Major extracellular electrolyte, primary regulator of extracellular fluid volume, membrane potential, active transport across cell membranes, acid-base balance, body fluids osmolarity, acid-alkaline balance

Sulfur functions

Integral part of glutathione, insulin, keratin, and other glycosaminoglycans in skin, cartilage, and connective tissue

Chromium functions (2)

#Enhances effect of insulin


-->amplifying tyrosine kinase activity


#lipid metabolism

Copper functions

#oxidation-reduction and electron transfer for oxygen




#ceruloplasmin: Manganese and ferrous oxidation ( Fe3-->Fe2)






iron metabolism and erythropoiesis,




glucose and cholesterol metabolism,




iron absorption, formation of bone marrow,




pigmentation of hair,




, connective tissue repair,




maintenance of myelin,




skeletal mineralization,

??




Fluorine functions

Prevents pregnancy anemia, reduces formation of acid in the mouth caused by carbs, contributes to hardening tooth enamel, contributes to stability of bone matrix, required for growth and fertility

Iodine functions (3)

#thyroid hormones (T3 and T4)


# cell metabolism


#tissues growth

Iron functions

Most abundant micro mineral in body; component of hemoglobin and myoglobin, oxygen transport within blood/muscle; redox reactions




important component of cytochromes for the oxidative production of cellular energy as ATP)

Manganese functions (3)

1) arginase (metalloenzymes): urea formation


2) CHO synthesis via pyruvate


3 reproduction and nerve cell function




Bone mineralization/demineralization,

Molybdenum functions

Required cofactor for xanthine, aldehyde, and sulfite oxidases; electron transfer agent in redox reactions

Selenium functions (4)

1) Component of glutathione peroxidase;


2) eliminate hydrogen peroxide


3) thyroid/iodine matabolism


4) metabolism of prostaglandins





Zinc deficiency

1) impairs cell-mediated immune function,


2) delayedwound healing and memory, loss of taste and smell acuity, brittle nails, skin lesions, diarrhea, anorexia, growth failure, sterility


3) glucose intolerance

Zinc functions

#cellular metabolism


#catalyst for enzymes


#wound healing, insulin synthesis, immune control


#zinc -finger motif in proteins


#gene expression



choline function

#transports lipids as acetylcholine


#cell membrane integrity, methyl metabolism, transmembrane signaling, lipid cholesterol metabolism

fluoride function (2)

#bone minearlization and hardening tooth enamel




#protect calcified tissues against demineralization


-->forming fluorapatite crystals