Lipid – Section 1


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6. Animals cannot convert fatty acids into glucose because

A. acetyl CoA can not be converted to pyruvate
B. absence of malate synthase
C. absence of dehydrogenase
D. absence of a-ketoglutarate dehydrogenase

Correct Answer: A. acetyl CoA can not be converted to pyruvate
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7. In eukaryotes, fatty acid breakdown occurs in

A. mitochondrial matrix
B. cytosol
C. cell membrane
D. endoplasmic reticulum

Correct Answer: A. mitochondrial matrix
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8. What is the major protein constituent of high-density lipoprotein (HDL)?

A. Apolipoprotein A-l
B. Apolipoprotein C-l
C. Apolipoprotein E
D. None of these

Correct Answer: A. Apolipoprotein A-l
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9. Phospholipid contains

A. hydrophilic heads and hydrophobic tails
B. long water-soluble carbon chains
C. positively charged functional groups
D. both (b) and (c)

Correct Answer: A. hydrophilic heads and hydrophobic tails
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10. Micelles of fatty acids in water are organized such that the __________ faces the solvent and the __________ are directed toward the interior

A. carboxylic acid groups, hydrocarbon chains heads
B. hydrophilic heads, hydrophobic tails
C. hydrocarbon chains, carboxylic acid groups
D. both (a) and (b)

Correct Answer: D. both (a) and (b)
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