Bacteria Morphology problems
- 1. The bacteria deficient in cell wall is
Options- A. Treponema
- B. Mycoplasma
- C. Staphylococcus
- D. Klebsiella Discuss
Correct Answer: Mycoplasma
- 2. The last step in synthesis of peptidoglycan is
Options- A. attachment of a peptide to muramic acid
- B. attaching two amino acids to form a cross-link
- C. attachment of a portion of peptidoglycan to a membrane lipid
- D. binding of penicillin to a membrane protein Discuss
Correct Answer: attaching two amino acids to form a cross-link
- 3. The cocci which forms a chain is
Options- A. Streptococci
- B. diplococci
- C. Staphylococci
- D. Tetracocci Discuss
Correct Answer: Streptococci
- 4. Which of the following bacteria lack a cell wall and are therefore resistant to penicillin?
Options- A. Cyanobacteria
- B. Mycoplasmas
- C. Bdellovibrios
- D. Spirochetes Discuss
Correct Answer: Mycoplasmas
- 5. Porins are located in
Options- A. the outer membrane of gram-negative bacteria
- B. the peptidoglycan layer of gram-positive bacteria
- C. the cytoplasmic membrane of both gram-negative and gram-positive bacteria
- D. the periplasmic space of gram-negative bacteria Discuss
Correct Answer: the outer membrane of gram-negative bacteria
- 6. Chemotaxis is a phenomenon of
Options- A. swimming away of bacteria
- B. swimming towards a bacteria
- C. swimming away or towards of bacteria in presence of chemical compound
- D. none of the above Discuss
Correct Answer: swimming away or towards of bacteria in presence of chemical compound
- 7. Which of the following bacterial genera (that produces endospore) have medical importance?
Options- A. Clostridium
- B. Bacillus
- C. Both (a) and (b)
- D. None of these Discuss
Correct Answer: Both (a) and (b)
- 8. Which of the following structure(s) is /are external to cell wall?
Options- A. Flagella
- B. Stalks
- C. Sheath
- D. All of these Discuss
Correct Answer: All of these
- 9. The common word for bacteria which are spherical in shape is
Options- A. cocci
- B. bacilli
- C. spirilla
- D. pleomorphic Discuss
Correct Answer: cocci
- 10. Teichoic acids are typically found in
Options- A. cell walls of gram positive bacteria
- B. outer membranes of gram positive bacteria
- C. cell walls of gram negative bacteria
- D. outer membranes of gram negative bacteria Discuss
Correct Answer: cell walls of gram positive bacteria
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