BCH 367 CH 10 QUESTIONS AND
ANSWERS (GRADED A)
Which of the following statements is TRUE about two monosaccharides linked
together?
a) They form an oligosaccharide.
b) They contain a glycosidic bond.
c) They form a disaccharide.
d) All of the above - ANSWER-d
In I-cell disease, certain enzymes that are supposed to be targeted to the _____ do not
arrive because of abnormal glycosylation, in which a _____ is missing from the protein.
a) lysosome; mannose 6-phosphate
b) lysosome; glucosaminoglycan
c) endoplasmic reticulum; phosphate
d) endoplasmic reticulum; mannose 6-phosphate
e) lysosome; phosphate - ANSWER-e
The disaccharide sucrose can be cleaved into its component monosaccharides by the
enzyme _____. - ANSWER-sucrase
Functions of proteoglycans include:
a) lubrication.
b) hormonal stimulation of red blood cell production.
c) cell adhesion.
d) both lubrication and cell adhesion. - ANSWER-d
Cellulose:
a) is a homopolymer of glucose.
b) contains α-1,4-glycosidic bonds.
c) can link to other glucose polymers via hydrogen bonding.
d) Both the first and third answers are correct. - ANSWER-d
Which of the following statements is true of pectin but not of cellulose?
a) It is a polymer of glucose.
b) It is soluble.
c) It cannot be digested by animals.
, d) It increases the rate at which digestion products pass through the large intestine. -
ANSWER-b
Which of the following statements is true of a proteoglycan but not of erythropoietin?
a) It may contain N-linked carbohydrates.
b) It contains only O-linked carbohydrates.
c) The largest constituent by weight is the protein.
d) None of the above - ANSWER-d
Which of the following statements is TRUE of the molecule glucose?
a) It contains at least one double bond.
b) It contains six oxygens.
c) It is a hexose.
d) Both the second and third answers are true. - ANSWER-d
Which of the following statements is true of BOTH sucrose and lactose?
a) They are both disaccharides.
b) They both contain N-glycosidic bonds.
c) They both contain the same molecular formula. - ANSWER-a
Which of the following diseases result from abnormal glycoprotein or proteoglycan
biology?
a)Hurler disease
b) Cooley anemia
c) Creutzfeld-Jacob disease
d) All of the above - ANSWER-a
Which of the following is a characteristic of glycogen?
a) It is a heteropolymer.
b) It contains glucose and fructose.
c) It contains both 1-4-glycosidic bonds and 1-6-glycosidic bonds.
d) It can be rapidly hydrolyzed by amylase. - ANSWER-c
Monosaccharides can be modified through the addition of a(n) _____ via a(n) _____
bond.
a) amine; peptide
b) amine; N-glycolytic
c) alcohol; glycosidic
d) phosphoryl group; para-glycosidic - ANSWER-c
ANSWERS (GRADED A)
Which of the following statements is TRUE about two monosaccharides linked
together?
a) They form an oligosaccharide.
b) They contain a glycosidic bond.
c) They form a disaccharide.
d) All of the above - ANSWER-d
In I-cell disease, certain enzymes that are supposed to be targeted to the _____ do not
arrive because of abnormal glycosylation, in which a _____ is missing from the protein.
a) lysosome; mannose 6-phosphate
b) lysosome; glucosaminoglycan
c) endoplasmic reticulum; phosphate
d) endoplasmic reticulum; mannose 6-phosphate
e) lysosome; phosphate - ANSWER-e
The disaccharide sucrose can be cleaved into its component monosaccharides by the
enzyme _____. - ANSWER-sucrase
Functions of proteoglycans include:
a) lubrication.
b) hormonal stimulation of red blood cell production.
c) cell adhesion.
d) both lubrication and cell adhesion. - ANSWER-d
Cellulose:
a) is a homopolymer of glucose.
b) contains α-1,4-glycosidic bonds.
c) can link to other glucose polymers via hydrogen bonding.
d) Both the first and third answers are correct. - ANSWER-d
Which of the following statements is true of pectin but not of cellulose?
a) It is a polymer of glucose.
b) It is soluble.
c) It cannot be digested by animals.
, d) It increases the rate at which digestion products pass through the large intestine. -
ANSWER-b
Which of the following statements is true of a proteoglycan but not of erythropoietin?
a) It may contain N-linked carbohydrates.
b) It contains only O-linked carbohydrates.
c) The largest constituent by weight is the protein.
d) None of the above - ANSWER-d
Which of the following statements is TRUE of the molecule glucose?
a) It contains at least one double bond.
b) It contains six oxygens.
c) It is a hexose.
d) Both the second and third answers are true. - ANSWER-d
Which of the following statements is true of BOTH sucrose and lactose?
a) They are both disaccharides.
b) They both contain N-glycosidic bonds.
c) They both contain the same molecular formula. - ANSWER-a
Which of the following diseases result from abnormal glycoprotein or proteoglycan
biology?
a)Hurler disease
b) Cooley anemia
c) Creutzfeld-Jacob disease
d) All of the above - ANSWER-a
Which of the following is a characteristic of glycogen?
a) It is a heteropolymer.
b) It contains glucose and fructose.
c) It contains both 1-4-glycosidic bonds and 1-6-glycosidic bonds.
d) It can be rapidly hydrolyzed by amylase. - ANSWER-c
Monosaccharides can be modified through the addition of a(n) _____ via a(n) _____
bond.
a) amine; peptide
b) amine; N-glycolytic
c) alcohol; glycosidic
d) phosphoryl group; para-glycosidic - ANSWER-c
