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- Question
The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because
Options- A. they contain ether-linked isoprenoids in their plasma membrane
- B. they lack murein in their cell wall
- C. they contain 80S, as opposed to 70S, ribosomes
- D. all of the above
- Correct Answer
- they lack murein in their cell wall
- 1. The enzymes that catalyze the reactions of the Krebs cycle are found in which subcellular organelle of eukaryotes?
Options- A. Mitochondrion
- B. Chloroplast
- C. Ribosome
- D. Endoplasmic reticulum Discuss
- 2. Assimilatory sulfate reduction involves the nucleotide __________ during the incorporation of H2S in the production of __________ .
Options- A. ATP; methionine
- B. ATP; cytosine
- C. UTP; cytosine
- D. GTP; cytosine Discuss
- 3. Which of the following is true about ?-ionone, non-ionic detergent used in ? carotene fermentation medium?
Options- A. It is a precursor of ?-carotene fermentation process
- B. It is regarded as "steering" factor associated with bringing about the presence and activity of the enzymes responsible for ?-carotene formation
- C. It is an inducer of ? carotene fermentation process
- D. None of the above Discuss
- 4. Blackening of meat in cooked meat broth is through
Options- A. C histolyticum
- B. C perfringens
- C. C tetani
- D. all of these Discuss
- 5. Which of the following Staphylococcal haemolysins does not possess leucocidal activity?
Options- A. ? haemolysin
- B. ? haemolysin
- C. ? haemolysin
- D. ? haemolysin Discuss
- 6. Both Mycobacterium tuberculosis and Streptococcus pneumoniae
Options- A. are acquired by inhalation
- B. have cell walls that contain a high content of mycolic acids
- C. have polysaccharide capsules
- D. stay in the lung and rarely, if ever, enter the bloodstream Discuss
- 7. Inclusion bodies of measles virus are
Options- A. intracytoplasmic
- B. intranuclear
- C. both (a) and (b)
- D. none of these Discuss
- 8. Which of the following is the most primitive?
Options- A. Virus
- B. Eukaryote
- C. Archaeon
- D. Mitochondria Discuss
- 9. Which of the following bacteria is sensitive to pyrazinamide?
Options- A. Mycobacterium tuberculosis
- B. M bovis
- C. M fortuitum
- D. None of these Discuss
- 10. Traveller's diarrhea is caused by
Options- A. enteropathogenic Escherichia coli (EPEC)
- B. entero invasive E. coli (EIEC)
- C. entero toxigenic E. coli (ETEC)
- D. entero haemorrhagic E. coli (EHEC) Discuss
More questions
Correct Answer: Mitochondrion
Correct Answer: ATP; cytosine
Correct Answer: It is regarded as "steering" factor associated with bringing about the presence and activity of the enzymes responsible for ?-carotene formation
Correct Answer: C histolyticum
Correct Answer: ? haemolysin
Correct Answer: are acquired by inhalation
Correct Answer: both (a) and (b)
Correct Answer: Archaeon
Correct Answer: Mycobacterium tuberculosis
Correct Answer: entero toxigenic E. coli (ETEC)
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