Questions and answers for exam Preparation

MCQs

Total Questions : 115 | Page 4 of 12 pages

Question 31. In a batch culture, the specific rate of substrate utilization is 0.25 g (g cell mass)-1 h-1 and specific
rate of product formation is 0.215 g (g cell mass)-1 h-1. Calculate the yield of product from the
substrate(Yp/s). ___________

0.81 to 0.91
0.91 to 1.01
3.45 to 3.55
2.65 to 2.75

Discuss Question

Answer: Option A. -> 0.81 to 0.91

-NA-

Question 32. Match the commercial microbial sources in Group I with the products in Group II.Group I Group IIP. Corynebacteriumlilium 1. 2,3-Butane di-olQ. Klebsiellaoxytoca 2. Poly-Î²-hydroxybutyric acidR. Aspergillusniger 3. Glutamic acidS. Alcaligeneseutrophus 4. Citric acid

P-3,Q-1,R-2,S-4
P-3,Q-1,R-4,S-2
P-1,Q-3,R-2,S-4
P-1,Q-3,R-4,S-2

Discuss Question

Answer: Option B. -> P-3,Q-1,R-4,S-2

-NA-

Question 33. Match the antibioticsin Group I with the targets in Group II.Group I Group IIP. Sulfonamide 1. Peptidoglycan synthesisQ. Quinolones 2. Peptide chain elongationR. Erythromycin 3. Folic acid biosynthesisS. Cephalosporin 4. Topoisomerase

P-3, Q-4, R-1, S-2
P-2, Q-4, R-3, S-1
P-4, Q-1, R-2, S-3
P-3, Q-4, R-2, S-1

Discuss Question

Answer: Option D. -> P-3, Q-4, R-2, S-1

-NA-

Question 34. Match the cell structures in Group I with the organismsin Group II.Group I Group IIP. Endospores 1. MethanobacteriumQ. Bipolar flagella 2. TreponemaR. Pseudomurine in cell wall 3. SpirillumS. Periplasmic flagella 4. Clostridium

P-4, Q-3, R-1, S-2
P-4, Q-3, R-2, S-1
P-3, Q-4, R-1, S-2
P-4, Q-1, R-3, S-2

Discuss Question

Answer: Option A. -> P-4, Q-3, R-1, S-2

-NA-

Question 35. Match the entries in the Group I with the elution conditions in Group II.Group I Group IIP. Ion-exchange chromatography 1. Isocratic solventQ. Hydrophobic column chromatography 2. AmpholytesR. Gel filtration chromatography 3. Increasing gradient of saltS. Chromatofocusing 4. Decreasing gradient of polarity

P-4,Q-1,R-2,S-3
P-4,Q-3,R-1,S-2
P-3,Q-4,R-1,S-2
P-3,Q-4,R-2,S-1

Discuss Question

Answer: Option C. -> P-3,Q-4,R-1,S-2

-NA-

Question 36. Determine the correctness or otherwise of the following Assertion (a) and Reason (r).Assertion: Immobilization of plant cells can enhance secondary metabolite production during
bioreactor cultivation. Reason: Immobilization protects the plant cells from shear forces in the bioreactor.

Both (a) and (r) are true and (r) is the correct reason for (a).
Both (a) and (r) are true but (r) is not the correct reason for (a).
(a) is true but (r) is false.
(a) is false but (r) is true.

Discuss Question

Answer: Option A. -> Both (a) and (r) are true and (r) is the correct reason for (a).

-NA-

Question 37. The solution to dy/dx + y cot x = cosec x is

y = (c+x) cot x
y = (c+x) cosec x
y = (c + x) cosec x cot x
y = (c+x) cosec x/cot x

Discuss Question

Answer: Option B. -> y = (c+x) cosec x

-NA-

Question 38. The total number of fragments generated by the complete and sequential cleavage of the
polypeptide given below by Trypsin followed by CNBr is _________ Phe-Trp-Met-Gly-Ala-Lys-Leu-Pro-Met-Asp-Gly-Arg-Cys-Ala-Gln

Discuss Question

Answer: Option A. -> 5

-NA-

Question 39. One percent of the cars manufactured by a company are defective. What is the probability (upto
four decimals) that more than two cars are defective, if 100 cars are produced? __________

0.034 to 0.044
0.037 to 0.038
0.075 to 0.085
0.048 to 0.058

Discuss Question

Answer: Option C. -> 0.075 to 0.085

-NA-

Question 40. A complete restriction digestion of a circular plasmid (5000bp) was carried out with
HindIII,BamHIandEcoRI individually. Restriction digestion yielded following fragments. Plasmid + HindIIIâ†’ 1200bp and3800bp Plasmid + BamHIâ†’5000bp Plasmid + EcoRIâ†’ 2500bpThe number of sites for EcoRI,BamHIandHindIIIpresent on this plasmid are