Which lipoprotein is INCORRECTLY matched with its function in lipid metabolism? (A) chylomicron – transports dietary lipids from the small intestine to peripheral cells (B) VLDL – transports excess fat and cholesterol back to the liver (C) IDL – produced when lipid is removed from VLDL particles circulating in the blood (D) LDL – delivers cholesterol to peripheral tissues (E) HDL – picks up excess cholesterol from peripheral tissues

Which of the following statements concerning cholesterol regulation is true? (A) SREBP localizes to the ER when cellular cholesterol levels are low.(B) HMG CoA reductase degradation is inhibited when exogenous cholesterol is plentiful.(C) Binding of cholesterol to SREBP causes SREBP to move to the nucleus.(D) Low cellular energy triggers phosphorylation and inhibition of HMG CoA reductase.(E) SREBP binds to a sterol regulatory element in the HMG-CoA reductase gene promoter to decrease gene expression.

Glycogen is the major animal storage polysaccharide, and is a polymer of glucose. a) List ALL the biochemical steps involved in storing GLUCOSE as glycogen b) Give NAME/S of the ENZYMES involved in EACH listed step c) What PULLS the reaction forward? d) Give the NAME of the tissue where these steps occur. (HINT: remember glycogen is branched chain).

Q21