2.5 Study Guide Flashcards
What is the monosaccharide composition of an amylose polysaccharide?
a. Glucose + Glucose in an alpha 1, 4 linkage
b. Glucose + Glucose in a beta 1, 4 linkage
c. Galactose + Glucose in an alpha 1, 4 linkage
d. Galactose + Glucose in a beta 1, 6 linkage
e. Glucose + Glucose in an alpha 1, 6 linkage
Glucose + Glucose in an alpha 1, 4 linkage
Why is glycogen more branched than starch?
a. It is composed of different monosaccharides
b. It contains more alpha 1, 4 linkages
c. It contains less alpha 1, 6 linkages
d. It contains more alpha 1, 6 linkages
e. None of the above
It contains more alpha 1, 6 linkages
Which is TRUE about beta-linked polysaccharide chains
a. They are more rigid than alpha linkages
b. They are usually found in structural polysaccharides
c. The only difference between amylose and cellulose is the beta linkage
d. They tend to pack into tight crystalline bundles and sheets
e. All of the above
All of the above
Which is FALSE about agarose polysaccharide chains
a. They are rich in sialic acid
b. They have sulfate residues that can crosslink chains together
c. The chains form a coiled-coil double helix
d. They form a gel structure when they are hydrated
e. Aggregation of the helices forms filaments
They are rich in sialic acid
Which is FALSE about peptidoglycan?
a. The components are linked by a beta 1, 4 linkage
b. It is homopolysaccharide composed of repeating N-acetylmuramic acid (NAM) units
c. Short peptide chains attached to NAM residues crosslink with peptides from other NAM residues
d. It is a structural polysaccharide found only in bacteria
e. All of the above
It is homopolysaccharide composed of repeating N-acetylmuramic acid (NAM) units
How do beta lactams such as penicillin inhibit peptidoglycan synthesis?
a. They cleave the beta linkages in the polysaccharide chain
b. They inhibit peptide bond formation by transpeptidase
c. They remove peptide chains from NAM residues
d. They disrupt polysaccharide biosynthesis
e. None of the above
They inhibit peptide bond formation by transpeptidase
Which of these monosaccharide components is a major component of glycosaminoglycans?
a. L-Sialic acid
b. D-Fructose
c. D-Anhydrogalactose
d. L-Iduronic acid
e. D-Maltose
L-Iduronic acid
What functional group(s) are monosaccharide units in glycosaminoglycans frequently modified with?
a. Phosphate groups
b. Carboxylate groups
c. Sulfate groups
d. Both b and c
e. None of these
-Carboxylate groups
-Sulfate groups
Both b and c
Which is true about glycosaminoglycan structure and function in joints?
a. The polysaccharide chains are negatively charged
b. The chains form rigid rod-like structures
c. The space between chains is hydrated
d. Recovery from compression is due to repulsion between chains
e. All of the above
All of the above
