Question 1

Which of the following is correct regarding the nature of glycogen?

Accepted Answer

A) It is a trisaccharide used for storage. 
B) It has all non-reducing ends. 
C) It is a branched polymer of linked glucose residues. 
D) It is found primarily in the brain and skeletal muscles. 
A) It is a trisaccharide used for storage. 
B) It has all non-reducing ends. 
C) It is a branched polymer of linked glucose residues. 
D) It is found primarily in the brain and skeletal muscles.

Question 2

Which of the following carbons of glucose is oxidized upon formation of glucuronic acid?

Accepted Answer

A) C-1 
B) C-2 
C) C-4 
D) C-6 
A) C-1 
B) C-2 
C) C-4 
D) C-6

Question 3

Osmotic pressure is greatly reduced by formation of polysaccharide molecules from monosaccharide molecules.Which of the following does osmotic pressure depend on to accomplish this?

Accepted Answer

A) molecular weight 
B) number of hydroxyl groups 
C) numbers of molecules 
D) numbers of hydrogen bonds 
A) molecular weight 
B) number of hydroxyl groups 
C) numbers of molecules 
D) numbers of hydrogen bonds

Question 4

Which of the following dissaccharides represents trehalose,blood sugar in hemolymph of insects?

Accepted Answer

A) GlcααGlc 
B) Glcα4Glc 
C) Galβ4Glc 
D) Glcβ4Glc 
A) GlcααGlc 
B) Glcα4Glc 
C) Galβ4Glc 
D) Glcβ4Glc

Question 5

Which of the following compounds is typical of the oligosaccharide components found in beans,etc.,that are not digested in the stomach,but are digested by bacteria in the intestines,causing flatulence?

Accepted Answer

A) dextrantriose 
B) melezitose 
C) maltose 
D) stachyose 
A) dextrantriose 
B) melezitose 
C) maltose 
D) stachyose

Question 6

Which of the following is non-covalently attached to the core protein of a proteoglycan?

Accepted Answer

A) oligosaccharide 
B) glycosaminoglycan 
C) hyaluronic acid backbone 
D) keratin sulfate 
A) oligosaccharide 
B) glycosaminoglycan 
C) hyaluronic acid backbone 
D) keratin sulfate

Question 7

Which of the following is a chemical feature that is characteristic of carbohydrates?

Accepted Answer

A) the potential to form no more than 2 hydrogen bonds 
B) the existence of 1 or more symmetric centres 
C) the ability to exist in ring but not linear structures 
D) the capacity to form polymeric structures 
A) the potential to form no more than 2 hydrogen bonds 
B) the existence of 1 or more symmetric centres 
C) the ability to exist in ring but not linear structures 
D) the capacity to form polymeric structures

Question 8

Cellulose is extremely resistant to hydrolysis,but cellulase can catalyze its hydrolysis.Which of the following is the source of cellulase?

Accepted Answer

A) the pancreas 
B) bacteria that live in the rumen 
C) H⁺ secreted into the rumen 
D) the intestinal wall 
A) the pancreas 
B) bacteria that live in the rumen 
C) H⁺ secreted into the rumen 
D) the intestinal wall

Exam 7: Carbohydrates and the Glycoconjugates of Cell Surfaces

Which of the following is correct regarding the nature of glycogen?

Which of the following carbons of glucose is oxidized upon formation of glucuronic acid?

Osmotic pressure is greatly reduced by formation of polysaccharide molecules from monosaccharide molecules.Which of the following does osmotic pressure depend on to accomplish this?

Which of the following dissaccharides represents trehalose,blood sugar in hemolymph of insects?

Which of the following compounds is typical of the oligosaccharide components found in beans,etc.,that are not digested in the stomach,but are digested by bacteria in the intestines,causing flatulence?

Which of the following is non-covalently attached to the core protein of a proteoglycan?

Which of the following is a chemical feature that is characteristic of carbohydrates?

Cellulose is extremely resistant to hydrolysis,but cellulase can catalyze its hydrolysis.Which of the following is the source of cellulase?

The Facts of Life: Chemistry Is the Logic of Biological Phenomena

Water: the Medium of Life

Thermodynamics of Biological Systems

Amino Acids

Proteins: Their Primary Structure and Biological Functions

Proteins: Secondary, tertiary, and Quaternary Structure

Lipids

Lipid Biosynthesis

Membranes and Membrane Transport

The Reception and Transmission of Extracellular Information

Enzymes Kinetics and Specificity

Mechanisms of Enzyme Action

Enzyme Regulation

Molecular Motors

Nutrition and the Organization of Metabolism

Glycolysis

The Tricarboxylic Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Gluconeogenesis, glycogen Metabolism, and the Pentose Phosphate Pathway

Fatty Acid Catabolism

Nitrogen Acquisition and Amino Acid Metabolism

Nucleotides and Nucleic Acids

Structure of Nucleic Acids

Synthesis and Degradation of Nucleotides

Recombinant Dna: Cloning and Creation of Chimeric Genes

DNA Metabolism: Replication, recombination, and Repair

Transcription and the Regulation of Gene Expression

Protein Synthesis

Post-Transcriptional Regulation of Gene Expression

Completing the Protein Life Cycle: Folding, processing, and Degradation

Metabolic Integration and Organ Specialization

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