carbon #2
The structure of D-galactose differs from that of D-glucose at which carbon atom?
a) carbon #2
b) carbon #3
c) carbon #4
d) carbon #5
Fructose and ribose
In which of the following pairs of monosaccharides do the members of the pair contain different numbers of carbon atoms?
a) fructose and ribose
b) ribose and deoxyribose
c) glucose and fructose
d) glyceraldehyde and dihydroxyacetone
Dihydroxyacetone has two chiral centers
Which of the following statements concerning chiral centers in specific monosaccharides is incorrect?
a) Glyceraldehyde has one chiral center.
b) Dihydroxyacetone has two chiral centers.
c) Fructose has three chiral centers.
d) Glucose has four chiral cen
enantiomers
Which of the following terms correctly describes the relationship between D-glucose and L-glucose?
a) enantiomers
b) epimers
c) diastereomers
d) cis-trans isomers
melting point
Which of the following properties would be the same for D-galactose and L-galactose?
a) interaction with plane polarized light
b) solubility in a chiral solvent
c) melting point
d) reaction with (+)-2,3-butanediol
aldopentoses and ketohexoses
Which of the following types of monosaccharides have cyclic forms that involve a 5-membered ring?
a) aldopentoses and ketopentoses
b) aldopentoses and ketohexoses
c) aldohexoses and ketopentoses
d) aldohexoses and ketohexoses
sucrose and maltose
In which of the following pairs of carbohydrates are both members of the pair disaccharides?
a) glucose and fructose
b) lactose and amylose
c) sucrose and maltose
d) cellobiose and cellulose
lactose
Which of the following substances will produce both glucose and galactose when it is hydrolyzed?
a) sucrose
b) maltose
c) lactose
d) amylose
sucrose
In which of the following sugars is the bonding between monosaccharide units "head-to head" rather than "head-to-tail"?
a) cellobiose
b) maltose
c) lactose
d) sucrose
linkages between the monosaccharide units present.
The major structural difference between cellulose and starch is found in the
a) identity of the monosaccharide units present.
b) ring size of the monosaccharide units present.
c) linkages between the monosaccharide units present.
d) handedness of the mono
homopolysaccharide and chitin
Which of the following is a correct pairing of terms?
a) heteropolysaccharide and starch
b) homopolysaccharide and chitin
c) branch-chain polysaccharide and cellulose
d) unbranched-chain polysaccharide and glycogen
cellulose
In which of the following polysaccharides are all glycosidic linkages of the (1 4) type?
a) starch
b) cellulose
c) glycogen
d) amylopectin
b
Which of the following statements concerning carbohydrates is correct?
a) They are the most abundant type of biochemical substance in the human body.
b) They are all polyhydroxy aldehydes, polyhydroxyketones, or substances that yield such upon hydrolysis.
a
Which of the following monosaccharides are aldohexoses?
a) glucose
b) fructose
c) ribose
d) more than one correct response
e) no correct response
e
Which of the following statements concerning the D- and L- forms of a monosaccharide is incorrect?
a) They have structures that are nonsuperimposable mirror images of each other.
b) They must contain the same number of chiral centers.
c) They are enantiom
c
Which of the following monosaccharides has a structure in which two or more chiral centers are present?
a) glyceraldehyde
b) dihydroxyacetone
c) glucose
d) more than one correct response
e) no correct response
d
The left- and right-handed forms of a monosaccharide with a single chiral center are
a) enantiomers.
b) diastereomers.
c) epimers.
d) more than one correct response
e) no correct response
d
Which of the following properties would be the same for a pair of enantiomeric monosaccharides?
a) interaction with plane-polarized light
b) boiling point
c) solubility in water
d) more than one correct response
e) no correct response
b
Which of the following monosaccharides has cyclic forms that involve a 6-membered ring?
a) fructose
b) galactose
c) ribose
d) more than one correct response
e) no correct response
a
In which of the following disaccharides is a (1 4) glycosidic linkage present?
a) lactose
b) sucrose
c) maltose
d) more than one correct response
e) no correct response
b
Which of the following disaccharides produces two different monosaccharides upon hydrolysis?
a) maltose
b) sucrose
c) cellobiose
d) more than one correct response
e) no correct response
a
Which of the following disaccharides does not have two cyclic forms (alpha and beta)?
a) sucrose
b) lactose
c) maltose
d) more than one correct response
e) no correct response
a
Which of the following carbohydrates will give a positive Benedict's test?
a) galactose
b) sucrose
c) starch
d) more than one correct response
e) no correct response
b
In which of the following pairs of carbohydrates are both members of the pair polysaccharides?
a) cellulose and cellobiose
b) starch and glycogen
c) amylose and lactose
d) more than one correct response
e) no correct response
a
In which of the following carbohydrates are two different types of glycosidic linkages present?
a) glycogen
b) lactose
c) amylose
d) more than one correct response
e) no correct response
e
Which of the following is a correct pairing of terms?
a) storage polysaccharide and cellulose
b) structural polysaccharide and starch
c) acidic polysaccharide and glycogen
d) more than one correct response
e) no correct response
e
Which of the following statements concerning the positioning of -OH groups in the Fischer projection for L-glucose is correct?
a) right on both carbons 2 and 3
b) right on both carbons 3 and 4
c) left at carbon 3 and right at carbon 5
d) more than one cor
e
Which of the following statements concerning the positioning of -OH groups in the Haworth projection for -D-glucose is correct?
a) up at carbons 1, 3, and 5
b) down at carbons 2, 3, and 4
c) up at carbons 1 and 3 and down at carbons 2 and 4
d) more than o
carbon #2
The structure of D-galactose differs from that of D-glucose at which carbon atom?
a) carbon #2
b) carbon #3
c) carbon #4
d) carbon #5
Fructose and ribose
In which of the following pairs of monosaccharides do the members of the pair contain different numbers of carbon atoms?
a) fructose and ribose
b) ribose and deoxyribose
c) glucose and fructose
d) glyceraldehyde and dihydroxyacetone
Dihydroxyacetone has two chiral centers
Which of the following statements concerning chiral centers in specific monosaccharides is incorrect?
a) Glyceraldehyde has one chiral center.
b) Dihydroxyacetone has two chiral centers.
c) Fructose has three chiral centers.
d) Glucose has four chiral cen
enantiomers
Which of the following terms correctly describes the relationship between D-glucose and L-glucose?
a) enantiomers
b) epimers
c) diastereomers
d) cis-trans isomers
melting point
Which of the following properties would be the same for D-galactose and L-galactose?
a) interaction with plane polarized light
b) solubility in a chiral solvent
c) melting point
d) reaction with (+)-2,3-butanediol
aldopentoses and ketohexoses
Which of the following types of monosaccharides have cyclic forms that involve a 5-membered ring?
a) aldopentoses and ketopentoses
b) aldopentoses and ketohexoses
c) aldohexoses and ketopentoses
d) aldohexoses and ketohexoses
sucrose and maltose
In which of the following pairs of carbohydrates are both members of the pair disaccharides?
a) glucose and fructose
b) lactose and amylose
c) sucrose and maltose
d) cellobiose and cellulose
lactose
Which of the following substances will produce both glucose and galactose when it is hydrolyzed?
a) sucrose
b) maltose
c) lactose
d) amylose
sucrose
In which of the following sugars is the bonding between monosaccharide units "head-to head" rather than "head-to-tail"?
a) cellobiose
b) maltose
c) lactose
d) sucrose
linkages between the monosaccharide units present.
The major structural difference between cellulose and starch is found in the
a) identity of the monosaccharide units present.
b) ring size of the monosaccharide units present.
c) linkages between the monosaccharide units present.
d) handedness of the mono
homopolysaccharide and chitin
Which of the following is a correct pairing of terms?
a) heteropolysaccharide and starch
b) homopolysaccharide and chitin
c) branch-chain polysaccharide and cellulose
d) unbranched-chain polysaccharide and glycogen
cellulose
In which of the following polysaccharides are all glycosidic linkages of the (1 4) type?
a) starch
b) cellulose
c) glycogen
d) amylopectin
b
Which of the following statements concerning carbohydrates is correct?
a) They are the most abundant type of biochemical substance in the human body.
b) They are all polyhydroxy aldehydes, polyhydroxyketones, or substances that yield such upon hydrolysis.
a
Which of the following monosaccharides are aldohexoses?
a) glucose
b) fructose
c) ribose
d) more than one correct response
e) no correct response
e
Which of the following statements concerning the D- and L- forms of a monosaccharide is incorrect?
a) They have structures that are nonsuperimposable mirror images of each other.
b) They must contain the same number of chiral centers.
c) They are enantiom
c
Which of the following monosaccharides has a structure in which two or more chiral centers are present?
a) glyceraldehyde
b) dihydroxyacetone
c) glucose
d) more than one correct response
e) no correct response
d
The left- and right-handed forms of a monosaccharide with a single chiral center are
a) enantiomers.
b) diastereomers.
c) epimers.
d) more than one correct response
e) no correct response
d
Which of the following properties would be the same for a pair of enantiomeric monosaccharides?
a) interaction with plane-polarized light
b) boiling point
c) solubility in water
d) more than one correct response
e) no correct response
b
Which of the following monosaccharides has cyclic forms that involve a 6-membered ring?
a) fructose
b) galactose
c) ribose
d) more than one correct response
e) no correct response
a
In which of the following disaccharides is a (1 4) glycosidic linkage present?
a) lactose
b) sucrose
c) maltose
d) more than one correct response
e) no correct response
b
Which of the following disaccharides produces two different monosaccharides upon hydrolysis?
a) maltose
b) sucrose
c) cellobiose
d) more than one correct response
e) no correct response
a
Which of the following disaccharides does not have two cyclic forms (alpha and beta)?
a) sucrose
b) lactose
c) maltose
d) more than one correct response
e) no correct response
a
Which of the following carbohydrates will give a positive Benedict's test?
a) galactose
b) sucrose
c) starch
d) more than one correct response
e) no correct response
b
In which of the following pairs of carbohydrates are both members of the pair polysaccharides?
a) cellulose and cellobiose
b) starch and glycogen
c) amylose and lactose
d) more than one correct response
e) no correct response
a
In which of the following carbohydrates are two different types of glycosidic linkages present?
a) glycogen
b) lactose
c) amylose
d) more than one correct response
e) no correct response
e
Which of the following is a correct pairing of terms?
a) storage polysaccharide and cellulose
b) structural polysaccharide and starch
c) acidic polysaccharide and glycogen
d) more than one correct response
e) no correct response
e
Which of the following statements concerning the positioning of -OH groups in the Fischer projection for L-glucose is correct?
a) right on both carbons 2 and 3
b) right on both carbons 3 and 4
c) left at carbon 3 and right at carbon 5
d) more than one cor
e
Which of the following statements concerning the positioning of -OH groups in the Haworth projection for -D-glucose is correct?
a) up at carbons 1, 3, and 5
b) down at carbons 2, 3, and 4
c) up at carbons 1 and 3 and down at carbons 2 and 4
d) more than o