Microbiology in Biotechnology MCQ Questions & Answers

1.
In leguminous plants, both the rhizobium genes and the plant genes influence nodulation and nitrogen fixation. Which one of the following functions is not encoded by the host plant genes?

A. Production of inducers that modify rhizobial cell wall

B. Production of flavonoid inducers

C. Establishment of contact between bacteria and legume

D. Root hair curling

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2.
Which one of the following organisms is used for the determination of phenol coefficient of a disinfectant?

A. Salmonella typhi

B. Escherichia coli

C. Candida albicans

D. Bacillus psychrophilus

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3.
Match the cell structures in Group I with the organisms in Group II.

Group I Group II

P. Endospores 1. Methanobacterium

Q. Bipolar flagella 2. Treponema

R. Pseudomurine in cell wall 3. Spirillum

S. Periplasmic flagella 4. Clostridium

A. P-4, Q-3, R-1, S-2

B. P-4, Q-3, R-2, S-1

C. P-3, Q-4, R-1, S-2

D. P-4, Q-1, R-3, S-2

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4.
Match the human diseases in Group I with the causative agents in Group II.

List-I List-II

P. Amoebiasis 1. Leishmania donovani

Q. African sleeping sickness 2. Trypanosoma cruzi

R. Kala azar 3. Entamoeba histolytica

S. Chagas' disease 4. Trypanosoma gambiense

A. P-3, Q-4, R-2, S-1

B. P-3, Q-2, R-1, S-4

C. P-3, Q-4, R-1, S-2

D. P-4, Q-3, R-1, S-2

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5.
Which one of the following organisms is an indicator of fecal contamination?

A. Escherichia coli

B. Streptococcus lactis

C. Bacillus subtilis

D. Lactobacillus acidophilus

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6.
Match the antibiotics in Group I with their modes of action in Group II.

Group I Group II

P. Chloramphenicol 1. Inhibits protein synthesis by acting on 30S ribosomal subunit

Q. Rifampicin Interferes with DNA replication by inhibiting DNA gyrase

R. Tetracycline 3. Inhibits protein synthesis by acting on 50S ribosomal subunit

S. Quinolone Interferes with RNA polymerase activity

5. Inhibits P-lactamase activity

A. P-1, Q-2, R-3, S-5

B. P-3, Q-4, R-1, S-2

C. P-3, Q-2, R-1, S-4

D. P-1, Q-4, R-3, S-2

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7.
A list of pathogens (Group I) and a list of anti microbial agents (Group II) used to treat their infections are given below. Match the pathogens with the corresponding anti-microbial agents.

Group I Group II

P. Influenza A virus 1. Isoniazid

Q. Fungus 2. Amantadine

R. Plasmodium 3. Fluconazole

S. Mycobacterium 4. Artemisinin

5. Iodoquinol

A. P-4, Q-3, R-2, S-5

B. P-5, Q-2, R-4, S-1

C. P-2, Q-3, R-4, S-1

D. P-2, Q-3, R-1, S-5

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8.
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 is less than that produced in aerobic respiration.
S. Only substrate level phosphorylation is used to generate ATP.

A. P and S only

B. Q and S only

C. P and R only

D. P, Q and S only

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9.
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

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10.
Match the drugs in Group I with their mechanism of action in Group II.

Group I Group II

P. Paclitaxel 1. Inhibits protein translation

Q. Colchicine 2. Inhibits microtubule depolymerization

R. Etoposide 3. Inhibits DNA replication

S. Methotrexate 4. Alkylates DNA

5. Inhibits dihydrofolate reductase

6. Inhibits microtubule polymerization

A. P-1, Q-6, R-3, S-4

B. P-2, Q-6, R-3, S-5

C. P-1, Q-3, R-6, S-5

D. P-2, Q-3, R-6, S-4

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Group I	Group II
P. Endospores	1. Methanobacterium
Q. Bipolar flagella	2. Treponema
R. Pseudomurine in cell wall	3. Spirillum
S. Periplasmic flagella	4. Clostridium

List-I	List-II
P. Amoebiasis	1. Leishmania donovani
Q. African sleeping sickness	2. Trypanosoma cruzi
R. Kala azar	3. Entamoeba histolytica
S. Chagas' disease	4. Trypanosoma gambiense

Group I	Group II
P. Chloramphenicol	1. Inhibits protein synthesis by acting on 30S ribosomal subunit
Q. Rifampicin	Interferes with DNA replication by inhibiting DNA gyrase
R. Tetracycline	3. Inhibits protein synthesis by acting on 50S ribosomal subunit
S. Quinolone	Interferes with RNA polymerase activity
	5. Inhibits P-lactamase activity

Group I	Group II
P. Influenza A virus	1. Isoniazid
Q. Fungus	2. Amantadine
R. Plasmodium	3. Fluconazole
S. Mycobacterium	4. Artemisinin
	5. Iodoquinol

Group I	Group II
P. Paclitaxel	1. Inhibits protein translation
Q. Colchicine	2. Inhibits microtubule depolymerization
R. Etoposide	3. Inhibits DNA replication
S. Methotrexate	4. Alkylates DNA
	5. Inhibits dihydrofolate reductase
	6. Inhibits microtubule polymerization

Microbiology in Biotechnology MCQ Questions & Answers | Biotechnology

1. In leguminous plants, both the rhizobium genes and the plant genes influence nodulation and nitrogen fixation. Which one of the following functions is not encoded by the host plant genes?

Answer & Solution

2. Which one of the following organisms is used for the determination of phenol coefficient of a disinfectant?

Answer & Solution

3. Match the cell structures in Group I with the organisms in Group II. Group I Group II P. Endospores 1. Methanobacterium Q. Bipolar flagella 2. Treponema R. Pseudomurine in cell wall 3. Spirillum S. Periplasmic flagella 4. Clostridium

Answer & Solution

4. Match the human diseases in Group I with the causative agents in Group II. List-I List-II P. Amoebiasis 1. Leishmania donovani Q. African sleeping sickness 2. Trypanosoma cruzi R. Kala azar 3. Entamoeba histolytica S. Chagas' disease 4. Trypanosoma gambiense

Answer & Solution

5. Which one of the following organisms is an indicator of fecal contamination?

Answer & Solution

Answer & Solution

Answer & Solution

Answer & Solution

9. 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.

Answer & Solution

Answer & Solution

1.
In leguminous plants, both the rhizobium genes and the plant genes influence nodulation and nitrogen fixation. Which one of the following functions is not encoded by the host plant genes?

2.
Which one of the following organisms is used for the determination of phenol coefficient of a disinfectant?

3.
Match the cell structures in Group I with the organisms in Group II.

Group I Group II

P. Endospores 1. Methanobacterium

Q. Bipolar flagella 2. Treponema

R. Pseudomurine in cell wall 3. Spirillum

S. Periplasmic flagella 4. Clostridium

4.
Match the human diseases in Group I with the causative agents in Group II.

List-I List-II

P. Amoebiasis 1. Leishmania donovani

Q. African sleeping sickness 2. Trypanosoma cruzi

R. Kala azar 3. Entamoeba histolytica

S. Chagas' disease 4. Trypanosoma gambiense

5.
Which one of the following organisms is an indicator of fecal contamination?

9.
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.