3.1 Lipid Chemistry Flashcards
Energy is stored as
TAG
When oxidized, each fat releases
9 kcal
Are esters of fatty acids with glycerol
Fats/tags
Tags are synthesized in the process of
Dehydration
Molecules removed in the process of forming the ester binds of tags
3 water molecules
Are esters of fatty acids with higher molecular weight monohydric alcohol
Waxes
Molecules removed in the process of dehydration to for waxes
1 water molecule
Is made up fatty acid, alcohol, and phosphoric acid residue
Phispholipid
Also called cephalin
Found in cell membranes
Phosphatidylethanolamine
Also known as lecithin
Glycerophospholipid containing choline; most abundant phospholipid of the cell membrane; large stores of choline
Phosphatidylcholine
16-carbon saturated fatty acid
Constituent of pulmoary surfactabt
Significant in rds
Dipalmitoyl lecithin
Precurosor of cardiolipin
Found only in mitochondria for function
Phosphatidylglycerol
Yielded by sphingosine and fatty acid
Ceramide
Yielded by phosphoric acid, choline, and ceramide
Sphigomyeljn
Formed by fatty acid, alcohol, and sugar residue
Glycolipid
Complex glycosphingolipod derived from glucosylceramide that contain sialic acid
Ganglioside
Ganglioside where glucose is attached to ceramidw and galactose is attached to sialic acid
Gm3
Gm2
Gm3 + 4th carbon of galactose is attached to another sugar + galnac
Gm1
Gm2 + 3rd carbon of galnac is attached to another galactose
Ganglioside known as a receptor for cholera toxin
Gm3
Gangliosidosis
Def in gm1 B galactosidase
Tay sach’s disease
Def in hexosaminidase A
Enzyme for cleaving sulphate in sulfolioid
Arylsilfatase A
Definciency in aryksulfatase a is associated with
Metachromatic leukodystrophy
Lipid containing leucine
Lipstatin
Very potent inhibitor of pancreatic lipase
Lipstatin
Carries exogenous TAG
Chylomicrons
Carries endogenous TAG
VLDL
Cholesterol in plasma is in __ form
Esterified form
Cholesterol in cell membranes is in the – form
Free form
Precursor of vitamin d
Esgosterol
Naturally occuring steroids are in the – form
Chair form
3 ketone bodies
Acetone
Acetoacetic acid
B hydorxybutyric acid (carboxylic acid)
Significance of ADEK
A - vision
d - regulates calcium and phosphorus metab
E - antioxidant with possible reproductive fxns
Vit k regulates blood clotting