Post Type for Questions and Answers
Somatic cell gene transfer is used for P. transgenic animal production Q. transgenic diploid cell production R. classical breeding of farm animals S. in-vitro fertilization (A) P, R and S (B) P, Q and R (C) P and R (D) P only
Lymphocytes interact with foreign antigens in (A) Bone marrow (B) Peripheral blood (C) Thymus (D) Lymph nodes
A neonatally thymectomized mouse, immunized with protein antigen shows (A) both primary and secondary responses to the antigen (B) only primary response to the antigen (C) delayed type hypersensitive reactions (D) no response to the antigen
A culture of bacteria is infected with bacteriophage at a multiplicity of 0.3. The probability of a single cell infected with 3 phages is (A) 0.009 (B) 0.027 (C) 0.9 (D) 0.27
Interferon-β is produced by (A) bacteria infected cells (B) virus infected cells (C) both virus and bacteria infected cells (D) fungi infected cells
Which one of the following DOES NOT belong to the domain of Bacteria? (A) Cyanobacteria (B) Proteobacteria (C) Bacteroids (D) Methanobacterium
An example for template-independent DNA polymerase is (A) DNA Polymerase I (B) RNA polymerase (C) Terminal deoxynucleotidyl transferase (D) DNA polymerase III
Q.9 Under stress conditions bacteria accumulate (A) ppGpp (Guanosine tetraphosphate) (B) pppGpp (Guanosine pentaphosphate) (C) both ppGpp and pppGpp (D) either ppGpp or pppGpp
Q.8 During transcription (A) DNA Gyrase introduces negative supercoils and DNA Topoisomerase I removes negative supercoils (B) DNA Topoisomerase I introduces negative supercoils and DNA Gyrase removes negative supercoils (C) both DNA Gyrase and DNA Topoisomerase I introduce negative supercoils (D) both DNA Gyrase and DNA Topoisomerase I remove negative supercoils
Q.7 In transgenics, alterations in the sequence of nucleotide in genes are due to P. Substitution Q. Deletion R. Insertion S. Rearrangement (A) P and Q (B) P, Q and R (C) Q and R (D) R and S
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