Question 1

Lactose intolerance

Accepted Answer

A)  arises from inability to metabolize the disaccharide lactose 
B)  depends on a deficiency of sucrose in the diet 
C)  is based on the composition of lactose, consisting glucose and fructose in glycosidic linkage 
D)  arises because lactose is a dimer of galactose 
A)  arises from inability to metabolize the disaccharide lactose 
B)  depends on a deficiency of sucrose in the diet 
C)  is based on the composition of lactose, consisting glucose and fructose in glycosidic linkage 
D)  arises because lactose is a dimer of galactose

Question 2

In a Fischer projection,which chiral carbon determines whether the sugar is the D- or the L-isomer?

Accepted Answer

A)  highest numbered carbon atom 
B)  lowest numbered asymmetric carbon atom 
C)  lowest numbered carbon atom 
D)  highest numbered asymmetric carbon atom 
A)  highest numbered carbon atom 
B)  lowest numbered asymmetric carbon atom 
C)  lowest numbered carbon atom 
D)  highest numbered asymmetric carbon atom

Question 3

For the a anomer of a D-sugar,the anomeric hydroxyl in a Haworth projection

Accepted Answer

A)  has an upward projection (on the same side as the terminal CH2OH group). 
B)  has a downward projection (on the opposite side from the terminal CH2OH group). 
C)  may be either up or down, it depends on the individual sugar. 
D)  is non-existent; anomers are a consideration only in Fischer projections. 
A)  has an upward projection (on the same side as the terminal CH2OH group). 
B)  has a downward projection (on the opposite side from the terminal CH2OH group). 
C)  may be either up or down, it depends on the individual sugar. 
D)  is non-existent; anomers are a consideration only in Fischer projections.

Question 4

How many enantiomeric pairs are possible for a aldohexose?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  16 
A)  2 
B)  4 
C)  8 
D)  16

Question 5

Isomers of sugars in which the position of ketone and aldehyde groups have been changed are called

Accepted Answer

A)  anomers. 
B)  diastereoisomers. 
C)  enantiomers. 
D)  epimers. 
E)  none of these 
A)  anomers. 
B)  diastereoisomers. 
C)  enantiomers. 
D)  epimers. 
E)  none of these

Question 6

Exhibit 16C   A polysaccharide.
Refer to Exhibit 16C.Which best describes bond #3?

Accepted Answer

A)  a[1,3] 
B)  b[1,3] 
C)  a[2,4] 
D)  b[2,4] 
E)  None of the above is a proper description. 
A)  a[1,3] 
B)  b[1,3] 
C)  a[2,4] 
D)  b[2,4] 
E)  None of the above is a proper description.

Question 7

Cartilage and mucous are both slippery because:

Accepted Answer

A)  Short polymers comprise these compounds. 
B)  The charge repulsion between the many acid groups in these polymers. 
C)  The sticky nature of sugars. 
D)  Both charge repulsion of acidic groups and the sticky nature of sugars. 
E)  All of these 
A)  Short polymers comprise these compounds. 
B)  The charge repulsion between the many acid groups in these polymers. 
C)  The sticky nature of sugars. 
D)  Both charge repulsion of acidic groups and the sticky nature of sugars. 
E)  All of these

Question 8

Which of the following molecules is a disaccharide?

Accepted Answer

A)  glucose 
B)  lactose 
C)  fructose 
D)  galactose 
A)  glucose 
B)  lactose 
C)  fructose 
D)  galactose

Lactose intolerance

In a Fischer projection,which chiral carbon determines whether the sugar is the D- or the L-isomer?

For the a anomer of a D-sugar,the anomeric hydroxyl in a Haworth projection

How many enantiomeric pairs are possible for a aldohexose?

Isomers of sugars in which the position of ketone and aldehyde groups have been changed are called

Exhibit 16C A polysaccharide. Refer to Exhibit 16C.Which best describes bond #3?

Cartilage and mucous are both slippery because:

Which of the following molecules is a disaccharide?

Biochemistry and the Organization of Cells

Water: The Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of Rna

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters

Exam 16: Carbohydrates

Lactose intolerance

In a Fischer projection,which chiral carbon determines whether the sugar is the D- or the L-isomer?

For the a anomer of a D-sugar,the anomeric hydroxyl in a Haworth projection

How many enantiomeric pairs are possible for a aldohexose?

Isomers of sugars in which the position of ketone and aldehyde groups have been changed are called

Exhibit 16C A polysaccharide. Refer to Exhibit 16C.Which best describes bond #3?

Cartilage and mucous are both slippery because:

Which of the following molecules is a disaccharide?

Biochemistry and the Organization of Cells

Water: The Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of Rna

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters