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Bacteria (GATE - XL)

Microbiology

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is a pair of bacteria belonging to class Alphaproteobacteria?

  1. Brucella and Azospirillum
  2. Bordetella and Neisseria
  3. Chromatium and Legionella
  4. Desulfovibrio and Myxococcus
  5. Campylobacter and Helicobacter
Question 2 Multiple Choice (Single Answer)

Which of the following bacterial genera is employed in sewage treatment process?

  1. Azotobacter
  2. Brucella
  3. Erwinia
  4. Pelagibacter
  5. Zoogloea
Question 3 Multiple Choice (Single Answer)

All of the following are examples of anoxygenic photosynthetic bacteria, except

  1. Anabaena
  2. Chlorobium
  3. Chloroflexus
  4. Chromatium
  5. Rhodospirillum
Question 4 Multiple Choice (Single Answer)

Which of the following diseases is not caused by spirochetes?

  1. Syphilis
  2. Relapsing fever
  3. Lyme disease
  4. Leptospirosis
  5. Tetanus
Question 5 Multiple Choice (Single Answer)

Match the following:

 
Group I Group II
P. Clostridium botulinum 1. Facultative anaerobe
Q. Staphylococcus aureus 2. Obligate anaerobe
R. Mycobacterium tuberculosis 3. Aerobic
S. Campylobacter jejuni 4. Microaerophilic
  1. P - 1; Q - 2; R - 3; S - 4
  2. P - 1; Q - 3; R - 2; S - 4
  3. P - 2; Q - 1; R - 3; S - 4
  4. P - 2; Q - 1; R - 4; S - 3
  5. P - 3; Q - 2; R - 1; S - 4
Question 6 Multiple Choice (Single Answer)

Identify the obligate intracellular parasite(s) from the following:

  1. Rickettsia
  2. Coxiella
  3. Chlamydia
  1. Only 1
  2. Only 2
  3. Only 3
  4. All of the above
  5. None of these
Question 7 Multiple Choice (Single Answer)

Which of the following pairs is incorrectly matched?

  1. Moraxella : Anaerobic coccobacilli
  2. Neisseria : Aerobic, gram-negative cocci
  3. Francisella : Pleomorphic bacteria
  4. Pseudomonas : Aerobic, gram-negative rods
  5. Brucella : Non-motile coccobacilli
Question 8 Multiple Choice (Single Answer)

Which of the following diseases is not caused by a member of order Enterobacteriales?

  1. Typhoid
  2. Bacillary dysentery
  3. Tetanus
  4. Pneumonia
  5. Plague
Question 9 Multiple Choice (Single Answer)

Which of the following photosynthesising bacteria belong to phylum Proteobacteria?

  1. Anabaena
    2. Chlorobium
    3. Rhodospirillum
    4. Chromatium
  1. 1 and 2
  2. 1 and 4
  3. 2 and 3
  4. 2 and 4
  5. 3 and 4
Question 10 Multiple Choice (Single Answer)

Match the following:

 
Column I Column II
P. Azotobacter 1. Alphaproteobacteria
Q. Nitrobacter 2. Betaproteobacteria
R. Stigmatella 3. Gammaproteobacteria
S. Thiobacillus 4. Deltaproteobacteria
  1. P - 1; Q - 2; R - 3; S - 4
  2. P - 2; Q - 1; R - 4; S - 3
  3. P - 2; Q - 3; R - 1; S - 4
  4. P - 3; Q - 1; R - 4; S - 2
  5. P - 4; Q - 2; R - 3; S - 1
Question 11 Multiple Choice (Single Answer)

Which of the following bacteria does not belong to phylum Firmicutes?

  1. Clostridium
  2. Sarcina
  3. Streptobacillus
  4. Bacillus
  5. Streptococcus
Question 12 Multiple Choice (Single Answer)

All of the following are bacteria belonging to order Enterobacteriales of phylum Gammaproteobacteria, except

  1. Enterobacter
  2. Erwinia
  3. Proteus
  4. Azotobacter
  5. Serratia
Question 13 Multiple Choice (Single Answer)

Which of the following bacteria is not an example of spirochetes?

  1. Treponema
  2. Spirillum
  3. Leptospira
  4. Borrelia
  5. None of these
Question 14 Multiple Choice (Single Answer)

Which of the following bacteria are examples of free-living nitrogen fixers?

  1. Rhizobium
    2. Beijerinckia
    3. Bradyrhizobium
    4. Azomonas
    5. Azotobacter
  1. 1, 2 and 3
  2. 1, 3 and 5
  3. 2, 3 and 4
  4. 2, 4 and 5
  5. 3, 4 and 5
Question 15 Multiple Choice (Single Answer)

Match the following:

 
Column I Column II
P. Chloroflexus 1. Purple non-sulphur bacteria
Q. Chlorobium 2. Purple sulphur bacteria
R. Rhodospirillum 3. Green non-sulphur bacteria
S. Chromatium 4. Green sulphur bacteria
  1. P - 1; Q - 2; R - 3; S - 4
  2. P - 2; Q - 1; R - 4; S - 3
  3. P - 3; Q - 1; R - 4; S - 2
  4. P - 3; Q - 4; R - 1; S - 2
  5. P - 3; Q - 1; R - 2; S - 4
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