1. Micelles . . . A. are used to solubilize exogenous lipids in the bile B. are

Question

1. Micelles . . .

A. are used to solubilize exogenous lipids in the bile

B. are composed of lipid bilayers

C. are the organelles where fatty acid synthesis occurs

D. A, B, and C above

E. None of the above

2. Cholesterol . . .

A. needs to be eliminated from the human diet

B. esters carry lipids within the cholymicrons

C. is a saturated straight chain hydrocarbon

D. A and C above

E. None of the above

3. An example of a peptidase is . . .

A. trypsin

B. chymotrypsin

C. pepsin

D. B and C above

E. A, B, and C above

4. Cyclic AMP . . . .

A. is important for phosphorylation cascades

B. activates triacylglycerol lipase via a protein kinase

C. concentration is dependent upon glucagons concentrations

D. A, B, and C above

E. A and B above

5. Acyl CoA synthetase. . .

A. is not necessary for fatty acid degradation

B. activates fatty acids by linking them to CoASH

C. uses pyrophosphate hydrolysis to drive the reaction to completion

D. B and C above E. A and B above

6. Beta oxidation of fatty acids . . .

A. needs both FAD and NAD+ cofactors

B. removes butyl groups (4 C) with each subsequent round

C. occurs in the cytosol of the cell

D. A and B above

E. B and C above

7. Fatty acid synthesis . . . . . . . .

A. needs malonyl CoA

B. produces palmitate as the final product

C. occurs in the mitochondrial matrix

D. A, B, and C above

E. A and B above

8. Lipid transport in the blood . . . .

A. depends on the presence of lipoproteins

B. has no importance for cholesterol transport

C. occurs for both exogenous and endogenous lipids

D. A and B above

E. A and C above

Explanation / Answer

Ans 1. E. None of the above

Micelles are the particles of colloidal dimensions that have polar hydrophilic head regions aligned and oriented to the exterior and hydrophobic fatty acid chains that are oriented towards their interior forming the core.

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