Microbiology
GATE Microbiology - Bacterial and Viral Diseases, Classification, and Genetic Techniques
Questions
Which of the following is a pair of diseases caused by Gram-positive bacteria?
- The clap and Typhoid fever
- Cholera and Botulism
- Typhoid and Listeriosis
- Gonorrhoea and Cholera
- Botulism and Listeriosis
Which of the following diseases is/are caused by viruses with single stranded RNA genome?
- Rabies
- Breakbone fever
- Infantile paralysis
- Only 1
- Only 2
- Only 3
- Only 2 and 3
- All of these
Which one of the following sets of diseases is caused by different types of harmful viruses and mainly affects the human brain?
- Rabies, meningitis, encephalomyelitis
- Encephalomyelitis, meningitis, Alzheimers
- Serum hepatitis, meningitis, rabies
- Query fever, Alzheimers, Parkinsons
- Influenza, Parkinsons, Huntington's chorea
Which of the following diseases is caused by a DNA virus?
- Infectious hepatitis
- Serum hepatitis
- Hepatitis C
- Hepatitis D
- Hepatitis E
Which of the following are examples of human sexually transmitted infection caused by bacteria?
- The clap
- Trich
- Syphilis
- Chlamydia
- Only 1 and 2
- Only 1, 2 and 3
- Only 1, 3 and 4
- All of these
- Only 2, 3 and 4
Which of the following diseases is/are caused by Gram-positive coccus bacteria?
- Pertussis
- Pneumococcal pneumonia
- Diphtheritic croup
- Only 1
- Only 2
- Only 3
- Only 1 and 2
- Only 2 and 3
Which of the following is a viral respiratory disease?
- Mucocutaneous lymph node syndrome.
- Serum hepatitis
- SARS
- Plague
- Diphtheria
Which of the following viral diseases is/are caused by double-stranded DNA viruses?
- Morbilli
- Epidemic parotitis
- Varicella disease
- Red plague
- Only 1 and 2
- Only 1 and 3
- Only 2 and 3
- Only 2 and 4
- Only 3 and 4
Which of the following diseases is/are caused by Gram-positive spore forming bacteria?
- Anthrax
- Tetanus
- Cholera
- Typhoid
- Only 1 and 2
- Only 1 and 3
- Only 2 and 3
- Only 2 and 4
- Only 3 and 4
Match the following diseases with their causative agent and vector
| Disease |
</strong>|<strong>Causative agent
</strong>|<strong>Vector</strong>|
|P. Dumdum fever|i. Plasmodium spp.|1. Tse-tse fly|
|Q. African trypanosomiasis|ii. Leishmania donovani|2. Sandfly|
|R. Epidemic louse-borne typhus|iii. Trypanosoma brucei |3. Mosquito|
|S. Malaria|iv. Rickettsia prowazekii|4. Body louse|
- P-ii-3, Q-iv-1, R-i-2, S-iii-4
- P-iii-1, Q-iv-2, R-ii-4, S-i-3
- P-i-2, Q-ii-4, R-iii-2, S-iv-3
- P-ii-2, Q-iii-1, R-iv-4, S-i-3
- P-i-4, Q-iii-1, R-ii-3, S-iv-2
Assertion: Flavr Savr tomato was the first commercially grown genetically engineered food to be granted a license for human consumption.
Reason: Flavr Savr tomatoes were developed using recombinant DNA techniques to express the trait of early softening of tomato fruit.
- A and R both are correct and R is correct explanation of A.
- A and R both are correct and R is not correct explanation of A.
- A is correct and R is incorrect.
- A is incorrect and R is correct.
- A and R both are incorrect.
Which of the following is a pair of antibiotics that act by disrupting the synthesis of the murein layer of bacterial cell walls?
- Amoxicillin
- Erythromycin
- Ofloxacin
- Ciprofloxacin
- Tetracycline
Match the column – I with column – I
| Column – I | Column – II |
| P. Hookworm | 1. Necator americanus |
| Q. Threadworm | 2. Caenorhabditis elegans |
| R. Roundworm | 3. Enterobius gregorii |
| S. Whipworm | 4. Trichuris suis |
- P-1; Q-2; R-3; S-4
- P-1; Q-3; R-2; S-4
- P-2; Q-4; R-3; S-1
- P-2; Q-3; R-4; S-1
- P-4; Q-3; R-2; S-1
Different steps of Variable Number of Tandem Repeats (VNTR) technique are given below:
(i) Isolation of DNA,
(ii) Separation of DNA fragments by electrophoresis
(iii) Digestion of DNA by restriction endonucleases
(iv) Hybridisation using labelled VNTR probe
(v) Transferring (blotting) of separated DNA fragments to synthetic membranes, such as nitrocellulose or nylon
(vi) Detection of hybridised DNA fragments by autoradiography.
The first and the last steps are placed correctly. Which one of the following arrangements of steps (ii) to (v) is correct?
- (ii) → (iii) → (iv) → (v)
- (iii) → (ii) → (iv) → (v)
- (iii) → (ii) → (v) → (iv)
- (ii) → (iii) → (v) → (iv)
- (ii) → (iv) → (iii) → (v)
Assertion: Zinc-finger nucleases (ZFNs) are artificial restriction enzymes.
Reason: The DNA-binding domains of individual ZFNs typically contain between nine and eighteen individual zinc finger repeats.
- A and R both are correct and R is correct explanation of A.
- A and R both are correct and R is not correct explanation of A.
- A is correct and R is incorrect.
- A is incorrect and R is correct.
- A and R both are incorrect.