BIOC192 Lecture 26 - A Snapshot of Vitamins from a Nutritional Perspective Flashcards
do vitamins provide energy when they break down?
no they provide no energy
what type of molecules are vitamins?
organic molecules
what are the fat soluble vitamins?
- vitamin A
- vitamin D
- vitamin E
- vitamin K
what are the water-soluble vitamins?
- vitamin C
- B vitamins
what are the roles of vitamins and minerals?
- coenzymes
- cofactors
what are co-enzymes?
carrier molecules
what are co-factors?
assist with catalysis
what is the important role of B vitamins?
plays an important role in co-enzymes involved with energy metabolism
what molecule can be converted into niacin?
tryptophan
what are the sources of niacin or vitamin B3 in the diet?
- meats
- liver
- milk
- fish
- legumes
- wheat
what does NAD stand for?
nicotinamide adenine dinucleotide
what is NAD involved in?
involved in the synthesis and breakdown of carbohydrates, lipids and amino acids
what is pellagra?
cellular deficiency of niacin (vitamin B3) from either inadequate intake of niacin or tryptophan, malabsorption, or the depletion of coenzymes to convert tryptophan to niacin
pellagra is often defined by the four D’s, what are they?
Dermatitis
Diarrhea
Dementia
Death
what are minerals?
essential non-organic elements
