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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 Bacteria trigger the stringent response under […]

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) […]

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 […]

Q.6 Peptidyl transferase activity resides in (A) 16S rRNA (B) 23S rRNA (C) 5S rRNA (D) 28S rRNA Peptidyl transferase catalyzes peptide bond formation during protein synthesis on ribosomes. This […]

Q.5 Program used for essentially local similarity search is (A) BLAST (B) RasMol (C) ExPASy (D) SWISS-PROT BLAST (Basic Local Alignment Search Tool) dominates bioinformatics for detecting sequence similarities. Tailored […]

Q.4 Antibiotic resistance marker that CANNOT be used in a cloning vector in Gram negative bacteria is (A) Streptomycin (B) Ampicillin (C) Vancomycin (D) Kanamycin Cloning vectors rely on antibiotic […]

Q.3 The bacteria known to be naturally competent for transformation of DNA is (A) Escherichia coli (B) Bacillus subtilis (C) Mycobacterium tuberculosis (D) Yersinia pestis Bacterial competence enables natural DNA […]

Q.2 Ames test is used to determine (A) The mutagenicity of a chemical (B) Carcinogenicity of a chemical (C) Both mutagenicity and carcinogenicity of a chemical (D) Toxicity of a […]

Q.1 Hybridoma technology is used to produce (A) Monoclonal antibodies (B) Polyclonal antibodies (C) Both monoclonal and polyclonal antibodies (D) B cells Here’s a SEO-optimized article on hybridoma technology, tailored […]