11. During protein synthesis in prokaryotes, the peptidyl transferase activity required for peptide bond formation is due to
a) ribosomal protein
b) aminoacyl tRNA
c) 16S ribosomal RNA
d) 23S ribosomal RNA
12. The distance between bacterial genes as determined from interrupted mating experiments are measured in units of
a)cM
b)bp
c)minutes
d)micrometers
13. Branchiostomaisa
a) deuterostome and schizocoelomate
b) protostome abd schizocoelomate
c) deuterostome and enterocoelomate
d) protostome and anterocoelomate
14. The most important reproductive strategies of big trees in a forest are
a) Earlier age at first reproduction and production of large number of small seeds
b) Earlier age at first reproduction and production of a small number of large seeds
c) Later age at first reproduction and production of a large number of small seeds
d) Later age at first reproduction and production of a small number of large seeds
15. Which one of the following is unfavorable for protein folding?
a)conformational entropy
b) Hydrogen bonding
c) Vander Waals interaction
d)hydrophobic interaction
16. The organs ‘radula’ and ‘citellum’ are found in
a) Mollusca and Annelida, respectively
b) Annelida and Mollusca , respectively
c)Coelenterata and Echinodermata, respectively
d) Echinodermata and Coelenterata, respectively
17.The peptide unit (-CO-NH-) is planar due to
a) Restriction around C-C bond
b) Restriction around C-N bond
c) Restriction around N-C bond
d) Hydrogen bonding between carbonyl oxygen and imino hydrogen of the peptide backbone.
18. Molecules primarily responsible for the formation of lipid raft are
a) sphingolipids and cholesterol
b) phosphatidyl inositol and cholesterol
c) glycosylphosphatidyl inositol and chloesterol
d) phosphatidyl serine and phosphatidyl serine
19. Membrane bound and free ribosomes, are structurally identical, but differ only at a given time in terms of association with
a) Phospholipids
b) nascent proteins
c) glycosylated proteins
d) acetylated proteins
20. A pathogen like mycobacterium, which colonizes inside the cells of the host, is likely to be least affected by which one of the following host immune defence mechanisms?
a) Cytokines
b) cell mediated immune response
c) cd+4 T lymphocytes
d)Humoral immnune response
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Answers
11. d) 23S ribosomal RNA
12. c)minutes
13. c) deuterostome and enterocoelomate
14. d) Later age at first reproduction and production of a small number of large seeds
15. a)conformational entropy
16. a) Mollusca and Annelida, respectively
17. b) Restriction around C-N bond
18. a) sphingolipids and cholesterol
Lipid rafts generally contain 3 to 5-fold the amount of cholesterol found in the surrounding bilayer. Also, lipid rafts are enriched in sphingolipids such as sphingomyelin, which is typically elevated by 50% compared to the plasma membrane.
19. b) nascent proteins
20. d)Humoral immnune response
a) ribosomal protein
b) aminoacyl tRNA
c) 16S ribosomal RNA
d) 23S ribosomal RNA
12. The distance between bacterial genes as determined from interrupted mating experiments are measured in units of
a)cM
b)bp
c)minutes
d)micrometers
13. Branchiostomaisa
a) deuterostome and schizocoelomate
b) protostome abd schizocoelomate
c) deuterostome and enterocoelomate
d) protostome and anterocoelomate
14. The most important reproductive strategies of big trees in a forest are
a) Earlier age at first reproduction and production of large number of small seeds
b) Earlier age at first reproduction and production of a small number of large seeds
c) Later age at first reproduction and production of a large number of small seeds
d) Later age at first reproduction and production of a small number of large seeds
15. Which one of the following is unfavorable for protein folding?
a)conformational entropy
b) Hydrogen bonding
c) Vander Waals interaction
d)hydrophobic interaction
16. The organs ‘radula’ and ‘citellum’ are found in
a) Mollusca and Annelida, respectively
b) Annelida and Mollusca , respectively
c)Coelenterata and Echinodermata, respectively
d) Echinodermata and Coelenterata, respectively
17.The peptide unit (-CO-NH-) is planar due to
a) Restriction around C-C bond
b) Restriction around C-N bond
c) Restriction around N-C bond
d) Hydrogen bonding between carbonyl oxygen and imino hydrogen of the peptide backbone.
18. Molecules primarily responsible for the formation of lipid raft are
a) sphingolipids and cholesterol
b) phosphatidyl inositol and cholesterol
c) glycosylphosphatidyl inositol and chloesterol
d) phosphatidyl serine and phosphatidyl serine
19. Membrane bound and free ribosomes, are structurally identical, but differ only at a given time in terms of association with
a) Phospholipids
b) nascent proteins
c) glycosylated proteins
d) acetylated proteins
20. A pathogen like mycobacterium, which colonizes inside the cells of the host, is likely to be least affected by which one of the following host immune defence mechanisms?
a) Cytokines
b) cell mediated immune response
c) cd+4 T lymphocytes
d)Humoral immnune response
Learn more:
Answers
11. d) 23S ribosomal RNA
12. c)minutes
13. c) deuterostome and enterocoelomate
14. d) Later age at first reproduction and production of a small number of large seeds
15. a)conformational entropy
16. a) Mollusca and Annelida, respectively
17. b) Restriction around C-N bond
18. a) sphingolipids and cholesterol
Lipid rafts generally contain 3 to 5-fold the amount of cholesterol found in the surrounding bilayer. Also, lipid rafts are enriched in sphingolipids such as sphingomyelin, which is typically elevated by 50% compared to the plasma membrane.
19. b) nascent proteins
20. d)Humoral immnune response
