Lipids
More Lipids
Lipids in Nutrition
Even more Lipids
100
How to determine Degree of Saturation?
is determined by the iodine #.
100
Whats the rate-limiting step in Cholesterol Synthesis?
3-hydroxyl-3-methylglutaryl-CoA (HMG-CoA) reductase
100
Where are Gastric lipase and Lingual lipase secreted from?
Lingual lipase secreted from the lingual serous (von Ebner) gland Gastric lipase Secreted from Chief cells
100
Major sites of FA synthesis in Pigs? humans? Lactating animals?
Adipose Liver Mammary gland
200
What happens in Omega-6 Pro- inflammatory?
Linoleic Acid (LA) is converted Gamma- Linolenic Acid (GLA) is converted into Arachidonic Acid. (AA)
200
Cholestrol is precursor of what?
Vitamin D (D3)
200
Where does majority of Lipolysis occur in Ruminants?
Lipolysis mainly occurs in the rumen
200
How to form malonyl CoA?
Acetyl CoA is carboxylated to form malonyl CoA
300
True/False- Greater the amount of Double bonds, the less stable the molecule
True
300
What are Eicosanoids?
Compounds derived from 20 carbon and 22 carbon FA
300
Function of Fatty Acid Binding Protein
Binding to FABP prevents unexpected detergent effects Envelopes the fatty acid while being transported through the cell
300
4 steps of Fatty Acid Synthesis?
1)Condensation 2)Reduction 3)Dehydration 4)Reduction
400
3 parts of Phospholipid?
Glycerol backbone 2 fatty acids Phosphate containing group
400
Characteristics of Bile Acid Micelles?
Micelle is composed of bile salts and phospholipid layer Hydrophilic ends out Hydrophobic ends in Core is composed of TAGs, fatty acids, MAGS, cholesterol, fat soluble vitamins and drugs Disc shaped
400
Why don't seals get hypothermia?
arctic seals have a very thick subcutaneous layer of fat (blubber) to protect them from hypothermia both in and out of the water.
500
Characteristics of Fatty Acids?
Unsaturated: > unsaturation, ↓ melting point liquid at lower temperatures Mono Unsaturated –One double bond, Poly Unstaurated- 2 or more double bonds Saturated-No double bonds! saturation, ↑ melting point Solid at higher temperatures
500
How are TAGS formed?
TAGS are formed by the esterification of 3 fatty acids to a glycerol molecule
500
Name 5 Lipoprotein Classes
1) Chylomicron (portomicron) 2) VLDL (Very low density lipoprotein) 3)IDL (intermediate density lipoproteins) 4)LDL (Low density lipoprotein) 5)HDL (High Density Lipoproteins)
500
Name the Adipocyte Locations
Depots under the skin (subcutaneous) Depots around the viscera (intestinal mesentery) Intra-abdominal fat (belly fat) Around the organs (kidneys – shock protection) Within tissues (intramuscular fat)
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