Questions and Answers

Match the microbial growth characteristics in Group I with the corresponding features in Group II:
Group I
P. Growth associated product formation
Q. Non growth associated product formation
R. Product inhibition
S. Substrate inhibition
Group II
1. Specific growth rate decreases with increasing product concentration
2. Specific product formation rate is constant
3. Specific product formation rate is proportional to specific growth rate
4. Specific growth rate decreases with increasing substrate concentration
Options:
(A) P-1, Q-2, R-4, S-3
(B) P-3, Q-2, R-1, S-4
(C) P-2, Q-1, R-3, S-4
(D) P-2, Q-3, R-4, S-1

Match the viruses in Group I with their host cell receptors in Group II:
Group I
P. Hepatitis A virus
Q. Human immunodeficiency virus
R. Rabies virus
Group II
1. Heparan sulphate
2. Acetylcholine receptor
3. CD4 protein
4. Alpha-2 macroglobulin
Options:
(A) P-1, Q-3, R-2, S-4
(B) P-3, Q-4, R-1, S-2
(C) P-4, Q-3, R-2, S-1
(D) P-2, Q-3, R-1, S-4

25. The protein in eukaryotes which is subjected to degradation undergoes:
(A) phosphorylation
(B) carboxylation
(C) ubiquitylation
(D) methylation

24. The polymorphic domains for Class II MHC proteins are:
(A) α and β2 domains only
(B) β and α2 domains only
(C) α1 and β1 domains only
(D) α2 and β2 domains only

23. Diphtheria toxin, tetracycline and streptomycin inhibit:
(A) DNA repair
(B) DNA replication
(C) transcription
(D) translation

22. The most widely used program for multiple sequence alignment is:
(A) BLAST
(B) FASTA
(C) CLUSTAL
(D) Chime

21. In the ABO blood group system, antigenic determinants are:
(A) nucleic acid
(B) carbohydrate
(C) lipid
(D) protein

20. Gas vacuoles are present in:
(A) Anabaena flos-aquae
(B) Bacillus subtilis
(C) Acanthurus nigrofuscus
(D) Mycobacterium tuberculosis

19. Molecular chaperones are a class of proteins that facilitate:
(A) the proper folding of newly synthesized proteins
(B) unfolding of newly synthesized proteins
(C) degradation of newly synthesized proteins
(D) targeting of newly synthesized proteins

18. The lipopolysaccharides present in bacterial cell wall has lipid A which is connected to:
(A) O-polysaccharide
(B) core polysaccharide
(C) both with O-polysaccharide and core polysaccharide
(D) rhamnose-mannose disaccharide