September 2023

Which of the following are true with regard to anaerobic respiration in bacteria?

Which of the following are true with regard to anaerobic respiration in bacteria?

Q. Which of the following are true with regard to anaerobic respiration in bacteria? P. The final electron acceptor is an inorganic substance other than molecular oxygen Q. The number of ATP molecules produced per glucose molecule is more than that produced in aerobic respiration R. The number of ATP molecules produced per glucose molecule

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Which of the following are true about bacterial superoxide dismutase?

Which of the following are true about bacterial superoxide dismutase?

Q. Which of the following are true about bacterial superoxide dismutase? P. Present in obligate aerobes Q. Present in facultative anaerobes R. Present in aerotolerant anaerobes S. Absent in obligate aerobes (A) P and Q only                       (B) P, Q and R only (C) P and R only                        (D) Q and S only Ans: P, Q

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Which one of the following statements is true with regard to processing and presentation of protein antigens?

Which one of the following statements is true with regard to processing and presentation of protein antigens?

Q. Which one of the following statements is true with regard to processing and presentation of protein antigens? (A) In the class II MHC pathway, protein antigens in the cytosol are processed by proteasomes (B) In the class I MHC pathway, extracellular protein antigens are endocytosed into vesicles and processed (C) In the class I

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Which one of the combinations of the following statements is true about antibody structure?

Which one of the combinations of the following statements is true about antibody structure?

Q. Which one of the combinations of the following statements is true about antibody structure? P. Limited proteolysis of rabbit IgG with the enzyme pepsin generates two antigen-binding regions (Fab) and an Fc fragment Q. Limited proteolysis of rabbit IgG with the enzyme papain generates a single bivalent antigen-binding region F(ab¢)2 and peptide fragments R.

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