Basic Microbiology

Which one of the following redox couples has the highest tendency to donate electrons? (A) Fumarate / succinate (B) NAD+^++ / NADH (C) FAD / FADH2_22​ (D) Pyruvate / lactate  

Match the antibiotics in Group I with the microorganisms that produce them in Group II. Group I Group II (P) Streptomycin (i) Streptomyces griseus (Q) Bacitracin (ii) Bacillus licheniformis (R) Amphotericin B (iii) Streptomyces nodosus (S) Chloramphenicol (iv) Streptomyces venezuelae (A) (P)-(ii), (Q)-(iii), (R)-(i), (S)-(iv) (B) (P)-(i), (Q)-(ii), (R)-(iii), (S)-(iv) (C) (P)-(i), (Q)-(ii), (R)-(iv), (S)-(iii) … Read more

Which one of the following represents the abundance of the organisms found in soil? (A) Fungi > Aerobic bacteria > Anaerobic bacteria (B) Aerobic bacteria > Fungi > Anaerobic bacteria (C) Aerobic bacteria > Anaerobic bacteria > Fungi (D) Anaerobic bacteria > Aerobic bacteria > Fungi  

Which one of the following uses inorganic compounds as an energy source? (A) Heterotrophs (B) Chemolithotrophs (C) Chemoorganotrophs (D) Photoheterotrophs  

Which one of the following double-stranded sequences will NOT be recognized by a Type IIP restriction endonuclease? (A) 5′–GGTACC–3′ 3′–CCTAGG–5′ (B) 5′–GGATCC–3′ 3′–CCTAGG–5′ (C) 5′–CATATG–3′ 3′–GTATAC–5′ (D) 5′–GATTTC–3′ 3′–CTAAAG–5′  

The most abundant class of immunoglobulins in serum is __________. (A) IgM (B) IgA (C) IgD (D) IgG  

In which of the following processes is glutaraldehyde used as a sterilizing agent? (A) Pasteurization (B) Incineration (C) Cold sterilization (D) Autoclaving  

Who among the following scientists was the pioneer in the development of chemotherapy? (A) Elie Metchnikoff (B) Robert Koch (C) Paul Ehrlich (D) Ronald Ross  

Which one of the following organisms has axial filaments? (A) Mycobacterium tuberculosis (B) Pasteurella multocida (C) Treponema pallidum (D) Shigella dysenteriae  

Which one of the following bacterial species can cause atypical pneumonia? (A) Chlamydia pneumoniae (B) Streptococcus pneumoniae (C) Klebsiella pneumoniae (D) Haemophilus influenzae