Questions and answers for exam Preparation

MCQs

Total Questions : 115 | Page 7 of 12 pages

Question 61. Which one of the following DNA sequences carries an invert repeat?

ATGAGCCCCGAGTA TACTCGGGGCTCAT
ATGAGCCGGCTCTA TACTCGGCCGAGAT
ATGAGCCGAGCCTA ACTCGGCTCGGAT
ATGAGCCTATGGTA TACTCGGATACCAT

Discuss Question

Answer: Option B. -> ATGAGCCGGCTCTA TACTCGGCCGAGAT

-NA-

Question 62. In zinc finger proteins, the amino acid residues that coordinate zinc are

Cys and His
Asp and Glu
Arg and Lys
Asp and Arg

Discuss Question

Answer: Option A. -> Cys and His

-NA-

Question 63. In an exponentially growing batch culture of Saccharomyces cerevisiae, the cell density is 20 gl-1
(DCW), the specific growth rate (Î¼) is 0.4 h-1 and substrate uptake rate (v) is 16 gl-1h-1. The cell
yield coefficient Yx/s will be

0.32
0.64
0.80
0.50

Discuss Question

Answer: Option D. -> 0.50

-NA-

Question 64. A single base pair of DNA weighs 1.1 * 10-21 grams. How many picomoles of a plasmid vector of
length 2750 bp are contained in 1 Î¼g of purified DNA?

0.30
0.55
0.25
0.91

Discuss Question

Answer: Option B. -> 0.55

-NA-

Question 65. Match the entries in Group I with those in Group II.Group I Group IIP. MTT 1. Dihydrofolate reductaseQ. Annexin V 2. Succinate dehydrogenaseR. Methotrexate 3. MicrotubulesS. Taxol 4. Phosphatidylserine

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

Discuss Question

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

-NA-

Question 66. Match the terms in Group I with the ploidy in Group II.Group I Group IIP. Disome 1. 2n + 1Q. Monosome 2. 2n “ 1R. Nullisome 3. n “ 1S. Trisome 4. n + 1

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

Discuss Question

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

-NA-

Question 67. Determine the correctness or otherwise of the following Assertion (a) and Reason (r). Assertion: The production of secondary metabolites in plant cell cultures is enhanced by the
addition of elicitors. Reason: Elicitors induce the expression of enzymes responsible for the biosynthesis of
secondary metabolites.

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

Discuss Question

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

-NA-

Question 68. Match the products in Group I with the applications in Group II.Group I Group IIP. Digoxin 1. Muscle relaxantQ. Stevioside 2. Anti-cancer agentR. Atropine 3. Cardiovascular disorderS. Vinblastine 4. Sweetener

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

Discuss Question

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

-NA-

Question 69. Determine the correctness or otherwise of the following Assertion (a) and Reason (r). Assertion: Plants convert fatty acids into glucose. Reason: Plants have peroxisomes.

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

-NA-

Question 70. An enzymatic reaction is described by the following rate expression. v = (vms)/(km + s + s2/ks)Which one of the following curves represents this expression?

Discuss Question

Answer: Option A. -> .

-NA-