Questions and answers for exam Preparation

MCQs

Total Questions : 115 | Page 11 of 12 pages

Question 101. The role of an adjuvant isto

prolong the persistence of antigen
cross link the antigen
increase the size of antigen
avoid inflammation

Discuss Question

Answer: Option A. -> prolong the persistence of antigen

-NA-

Question 102. The nucleotide analogue used in DNA sequencing by chain termination method is

1',3'-dideoxy nucleoside triphosphate
2',3'-dideoxy nucleoside triphosphate
2',4'-dideoxy nucleoside triphosphate
2',5'-dideoxy nucleoside triphosphate

Discuss Question

Answer: Option B. -> 2',3'-dideoxy nucleoside triphosphate

-NA-

Question 103. Human genome sequencing project involved the construction of genomic library in

bacterial artificial chromosome
pBR322
bacteriophage
pcDNA3.1

Discuss Question

Answer: Option A. -> bacterial artificial chromosome

-NA-

Question 104. Endogenous antigens are presented on to the cell surface along with

MHC-II
MHC-I
FcÎ³receptor
complement receptor

Discuss Question

Answer: Option B. -> MHC-I

-NA-

Question 105. In nature, the horizontal gene transfer across bacteria is mediated by

gene cloning followed by transformation
conjugation and transformation
conjugation only
transformation only

Discuss Question

Answer: Option B. -> conjugation and transformation

-NA-

Question 106. The suitable substitution matrix to align closely related sequences is

PAM 250 or BLOSSUM 80
PAM 40 or BLOSSUM 80
PAM 120 or BLOSSUM 40
PAM 250 or BLOSSUM 40

Discuss Question

Answer: Option B. -> PAM 40 or BLOSSUM 80

-NA-

Question 107. Hypophosphatemia is manifested by an X-linked dominant allele.What proportion of the offsprings
from a normal male and an affected heterozygous female will manifest the disease?

½ sons and ½ daughters
all daughters and no sons
all sons and no daughters
¼ daughters and ¼ sons

Discuss Question

Answer: Option A. -> ½ sons and ½ daughters

-NA-

Question 108. Match the entries in Group I with the enzymes in Group II.Group I Group IIP. NAD+ 1. Glutathione peroxidaseQ. Selenium 2. NitrogenaseR. Pyridoxal phosphate 3. Lactate dehydrogenaseS. Molybdenum 4. Glycogen phosphorylase

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

Discuss Question

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

-NA-

Question 109. Match the herbicides in Group I with the target enzymes in Group II.Group I Group IIP. Glyphosate 1. NitrilaseQ. Bromoxynil 2. AcetolactatesynthetaseR. Sulphonylureas 3. DehalogenaseS. Dalapon 4. 5-Enolpyruvyl shikimate3-phosphate synthase

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

Discuss Question

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

-NA-

Question 110. In nature, Agrobacterium tumefaciens mediated infection of plant cells leads to P. crown gall disease in plants Q. hairy root disease in plants R. transfer of T-DNA into the plant chromosome S. transfer of Ri-plasmid into the plant cell