Author: admin

Q.79 Which of the following diseases are caused by family of DNA viruses?(A) Hepatitis B(B) Smallpox(C) Influenza(D) Rabies Hepatitis B and Smallpox are caused by DNA viruses, making options (A) […]

Q78 The correct sequence of overall biochemical reaction which expresses the process of denitrification is Option Sequence (A) NO₃⁻ → NO₂⁻ → NO → N₂O → N₂ (B) NO₃⁻ → […]

Q.77 Match the correct mode of cell division with respective bacteria.Bacteria(P) Streptomyces species(Q) Rhodopseudomonas acidophila(R) Bacillus subtilis(S) Nocardia species (A) (P)-(ii), (Q)-(iii), (R)-(i), (S)-(iv)(B) (P)-(ii), (Q)-(i), (R)-(iii), (S)-(iv)(C) (P)-(iv), (Q)-(ii), […]

Q76 Match the pathogen with the appropriate disease. Pathogen Disease (P) Streptococcus pyogenes (i) Scarlet fever (Q) Brucella species (ii) Pot’s disease (R) Mycobacterium tuberculosis (iii) Traveler’s diarrhea (S) Escherichia […]

Q75 Choose the correct match for structural components of bacteria to their function. Structural component Function (P) Flagella (i) prevent lysis (Q) Cell wall (ii) chemotaxis (R) Metachromatic granules (iii) […]

Q.74 Nonsense suppressor mutation is found in _________________.(A) rRNA(B) tRNA(C) start codon of mRNA(D) stop codon of mRNA The correct answer is (B) tRNA. Nonsense suppressor mutations primarily occur in […]

Q.73 Which of the following are present in Gram-negative bacteria?(A) Lipopolysaccharide(B) Teichoic acid(C) Periplasm(D) Endotoxin Gram-negative bacteria possess a distinctive cell wall structure featuring an outer membrane and periplasmic space, […]

Q.72 Which of the following methods are used for the identification ofmicroorganisms?(A) Nucleic acid hybridization(B) Southern blotting(C) 16s rRNA sequencing(D) Percentage G-C content All options (A), (B), (C), and (D) […]

Q.71 Phenolics act as disinfectant by ____________.(A) rupturing plasma membrane followed by leakage of cellular contents(B) bond formation between adjacent pyrimidine bases(C) forming adduct with amino acid and unsaturated fatty […]

Q.70 The antimicrobial activity of vancomycin is due to the ____________.(A) inhibition of nucleic acid synthesis(B) damage to the cytoplasmic membrane(C) inhibition of cell wall synthesis(D) regulation of DNA supercoiling […]