GBS 707 Week 2 Exam Latest Update
The number of possible stereoisomers of aldohexoses:
A. 1
B. 2
C. 4
D. 8
E. 16
F. 124 - Answer E. 16
2^n-2
2^6-2
2^4=16
The number of possible stereoisomers of aldopentoses:
A. 1
B. 2
C. 4
D. 8
E. 16
F. 32 - Answer D. 8
2^n-2
2^5-2
2^3=8
Formula to determine number of possible stereoisomers for ketones - Answer 2^n-3;
n=number of C atoms
Formula to determine number of possible stereoisomers for aldehydes - Answer 2^n-2;
n=number of C atoms
A branched glucose homopolymer that can be digested by people is called:
A. chitin
, B. cellulose
C. amylose
D. amylopectin - Answer D. amylopectin
A polysaccharide conjugated vaccine consists of:
A. Killed bacteria conjugated to polysaccharides
B. Isolated proteins
C. Polysaccharides conjugated to immunogenic protein
D. Polysaccharide conjugated to immunogenic lipid - Answer C. Polysaccharides
conjugated to immunogenic protein
A prototypical pyrogen, a substance, inducing fever, is:
A. hyaluronate
B. influenza virus
C. phosphorylase
D. lipopolysaccharide
E. keratane sulfate
F. aggrecan - Answer D. lipopolysaccharide
A large proteoglycan responsible for the distinctive properties of cartilage, especially
its elasticity and resilience is:
A. heparin
B. dermatan sulfate
C. aggrecan
D. chondroitin sulfate
E. hyaluronic acid - Answer C. aggrecan
Penicillin acts by:
A. inhibiting RNA expression of specific genes in Gram-negative bacteria
B. Direct lysis of bacterial wall by hydrolysis of B(1-4) glycosidic linkage
C. inhibiting glycopeptide aminotransferase
D. inhibiting cross-linking of the peptidoglycan strands of bacterial walls - Answer D.
The number of possible stereoisomers of aldohexoses:
A. 1
B. 2
C. 4
D. 8
E. 16
F. 124 - Answer E. 16
2^n-2
2^6-2
2^4=16
The number of possible stereoisomers of aldopentoses:
A. 1
B. 2
C. 4
D. 8
E. 16
F. 32 - Answer D. 8
2^n-2
2^5-2
2^3=8
Formula to determine number of possible stereoisomers for ketones - Answer 2^n-3;
n=number of C atoms
Formula to determine number of possible stereoisomers for aldehydes - Answer 2^n-2;
n=number of C atoms
A branched glucose homopolymer that can be digested by people is called:
A. chitin
, B. cellulose
C. amylose
D. amylopectin - Answer D. amylopectin
A polysaccharide conjugated vaccine consists of:
A. Killed bacteria conjugated to polysaccharides
B. Isolated proteins
C. Polysaccharides conjugated to immunogenic protein
D. Polysaccharide conjugated to immunogenic lipid - Answer C. Polysaccharides
conjugated to immunogenic protein
A prototypical pyrogen, a substance, inducing fever, is:
A. hyaluronate
B. influenza virus
C. phosphorylase
D. lipopolysaccharide
E. keratane sulfate
F. aggrecan - Answer D. lipopolysaccharide
A large proteoglycan responsible for the distinctive properties of cartilage, especially
its elasticity and resilience is:
A. heparin
B. dermatan sulfate
C. aggrecan
D. chondroitin sulfate
E. hyaluronic acid - Answer C. aggrecan
Penicillin acts by:
A. inhibiting RNA expression of specific genes in Gram-negative bacteria
B. Direct lysis of bacterial wall by hydrolysis of B(1-4) glycosidic linkage
C. inhibiting glycopeptide aminotransferase
D. inhibiting cross-linking of the peptidoglycan strands of bacterial walls - Answer D.
