BCH 367 CH 11 WITH CORRECT
SOLUTIONS
Glycolipids are lipids that are bound to:
a) glycerol.
b) unsaturated fats.
c) cholesterol.
d) carbohydrates.
e) phosphates - ANSWER-d
Which of the following is NOT an example of a phosphoglyceride?
a) sphingomyelin
b)phosphatidylethanolamine
c) phosphatidylcholine
d) phosphatidylinositol
e) phosphatidylserine - ANSWER-a
An ω-3 fatty acid:
a) contains three double bonds.
b) contains a double bond after the third carbon atom, starting at the carboxyl terminus.
c) contains a double bond after the third carbon atom, starting at the methyl group.
d) is a saturated fatty acid. - ANSWER-c
A sugar-containing lipid is known as a(n) _____. - ANSWER-glycolipid
Which is true of phospholipids but not true of glycolipids?
a) contain at least one fatty acid
b) contain at least two fatty acids
c) contain sugar
d) contain phosphate - ANSWER-d
Estradiol and cholesterol are examples of _____, a class of lipids that contain a cyclical
rather a linear structure. - ANSWER-steroids
Which is the CORRECT formula for all-cis- Δ9, Δ12, Δ15-octadecatrienoate?
a) CH3(CH2)4(CH=CHCH2)2(CH2)6COO-
b) CH3CH2(CH=CHCH2)3(CH2)6COO-
c) CH3(CH=CHCH2)2CH=CH(CH2)6COO-
, d) CH3(CH2)5CH=CH(CH2)8COO- - ANSWER-b
_____ is the common name of the sodium or potassium salts of fatty acids generated by
treating triacylglycerol with strong bases. - ANSWER-soap
The three major kinds of membrane lipids are:
a) phospholipids, glycolipids, and cholesterol.
b)
phosphatidylinositol, phosphatidylcholine, and phosphatidylethanolamine.
c) phospholipids, fatty acids, and glycolipids.
d) phospholipids, fatty acids, and cholesterol.
e) fatty acid, glycerol, and phosphate-alcohol. - ANSWER-a
Triacylglycerol consists of fatty acids attached to:
a) one glycerol.
b) one glycerol phosphate.
c) three glycerols.
d) three cholesterols.
e) two glycerol phosphates. - ANSWER-a
Membrane lipids contain both a hydrophilic and a hydrophobic moiety. The name _____
is used to describe molecules with these dual characteristics. - ANSWER-amphipathic
The plasma membrane of a tropical fish would have_____ cis-unsaturated fatty acids
than a fish from the northern Atlantic. - ANSWER-less
The membranes of archaea are different in composition from those of eukaryotes or
bacteria. One difference is that the fatty-acid chains are joined to a glycerol backbone
by _____ linkages. These linkages are more resistant to hydrolysis than are ester
linkages. - ANSWER-ether
Fats are good fuels because:
a) they contain double bonds.
b)
they are more reduced than carbohydrates.
c) they have more linkages between oxygen and carbon than do carbohydrates.
d) upon combustion, they generate carbohydrates, which can then undergo glycolysis. -
ANSWER-b
All steroids are made from the steroid nucleus. Which of the following statements is
TRUE regarding the steroid nucleus?
a) It contains only five-membered carbon rings.
SOLUTIONS
Glycolipids are lipids that are bound to:
a) glycerol.
b) unsaturated fats.
c) cholesterol.
d) carbohydrates.
e) phosphates - ANSWER-d
Which of the following is NOT an example of a phosphoglyceride?
a) sphingomyelin
b)phosphatidylethanolamine
c) phosphatidylcholine
d) phosphatidylinositol
e) phosphatidylserine - ANSWER-a
An ω-3 fatty acid:
a) contains three double bonds.
b) contains a double bond after the third carbon atom, starting at the carboxyl terminus.
c) contains a double bond after the third carbon atom, starting at the methyl group.
d) is a saturated fatty acid. - ANSWER-c
A sugar-containing lipid is known as a(n) _____. - ANSWER-glycolipid
Which is true of phospholipids but not true of glycolipids?
a) contain at least one fatty acid
b) contain at least two fatty acids
c) contain sugar
d) contain phosphate - ANSWER-d
Estradiol and cholesterol are examples of _____, a class of lipids that contain a cyclical
rather a linear structure. - ANSWER-steroids
Which is the CORRECT formula for all-cis- Δ9, Δ12, Δ15-octadecatrienoate?
a) CH3(CH2)4(CH=CHCH2)2(CH2)6COO-
b) CH3CH2(CH=CHCH2)3(CH2)6COO-
c) CH3(CH=CHCH2)2CH=CH(CH2)6COO-
, d) CH3(CH2)5CH=CH(CH2)8COO- - ANSWER-b
_____ is the common name of the sodium or potassium salts of fatty acids generated by
treating triacylglycerol with strong bases. - ANSWER-soap
The three major kinds of membrane lipids are:
a) phospholipids, glycolipids, and cholesterol.
b)
phosphatidylinositol, phosphatidylcholine, and phosphatidylethanolamine.
c) phospholipids, fatty acids, and glycolipids.
d) phospholipids, fatty acids, and cholesterol.
e) fatty acid, glycerol, and phosphate-alcohol. - ANSWER-a
Triacylglycerol consists of fatty acids attached to:
a) one glycerol.
b) one glycerol phosphate.
c) three glycerols.
d) three cholesterols.
e) two glycerol phosphates. - ANSWER-a
Membrane lipids contain both a hydrophilic and a hydrophobic moiety. The name _____
is used to describe molecules with these dual characteristics. - ANSWER-amphipathic
The plasma membrane of a tropical fish would have_____ cis-unsaturated fatty acids
than a fish from the northern Atlantic. - ANSWER-less
The membranes of archaea are different in composition from those of eukaryotes or
bacteria. One difference is that the fatty-acid chains are joined to a glycerol backbone
by _____ linkages. These linkages are more resistant to hydrolysis than are ester
linkages. - ANSWER-ether
Fats are good fuels because:
a) they contain double bonds.
b)
they are more reduced than carbohydrates.
c) they have more linkages between oxygen and carbon than do carbohydrates.
d) upon combustion, they generate carbohydrates, which can then undergo glycolysis. -
ANSWER-b
All steroids are made from the steroid nucleus. Which of the following statements is
TRUE regarding the steroid nucleus?
a) It contains only five-membered carbon rings.
