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- Question
The viruses in an attenuated vaccine
Options- A. have no genome
- B. continue to replicate
- C. are usually larger than bacteria
- D. is altered with chemicals
- Correct Answer
- continue to replicate
- 1. The main difference between a self-transmissible and a mobilizable plasmid is that the self-transmissible plasmid
Options- A. transfers both strands of the plasmid DNA
- B. carries genes encoding the mating apparatus
- C. transfers antibiotic resistance genes
- D. usually has a transposon inserted into it Discuss
- 2. Cheese cancer of Swiss and similar cheese is caused by
Options- A. Oospora Crustacea
- B. Oospora caseovorans
- C. Oospora aurianticum
- D. none of these Discuss
- 3. A major organism used in commercial bioleaching for copper recovery is
Options- A. Desulfovibrio desulfuricans
- B. Pseudomonas aeruginosa
- C. Aspergillus niger
- D. Thiobacillus ferrooxidans Discuss
- 4. The organism used to produce L-glutamic acid is
Options- A. Micrococcus glutamicus
- B. Brevibacterium aminogenes
- C. Arthrobacter globiformis
- D. all of these Discuss
- 5. Cell theory includes all of the following except
Options- A. all organisms are composed of one or more cells
- B. the cell is the most primitive form of life
- C. the cell is the structural unit of life
- D. cells arise by division of preexisting cells Discuss
- 6. Large parasites such as helminthes may be killed extracellularly by the action of
Options- A. basophils
- B. monocytes
- C. eosinophils
- D. neutrophils Discuss
- 7. Which of the followings can be used to differentiate between classical and El Tor biotypes of Vibrio cholerae?
Options- A. Sensitivity to Mukerjee's group IV phage
- B. Agglutination of fowl RBCs
- C. Sensitivity to polymyxin B
- D. All of these Discuss
- 8. Which of the following statements on replication in E.coli is correct?
Options- A. It occurs in a unidirectional manner
- B. It occurs in bidirectional manner
- C. Always uses T7 DNA polymerase when infected by T7 phage
- D. Occurs only when ? phase has infected E. coli Discuss
- 9. The biogas production process takes place at the temperature
Options- A. lesser than 25°C
- B. 25-40°C
- C. 45-60°C
- D. all of these Discuss
- 10. Crystal violet blood agar is a selective medium for
Options- A. ?-haemolytic streptococci
- B. Staphylococcus aureus
- C. Corynebacterium diphtheriae
- D. Mycobacterium tuberculosis Discuss
More questions
Correct Answer: carries genes encoding the mating apparatus
Correct Answer: Oospora caseovorans
Correct Answer: Thiobacillus ferrooxidans
Correct Answer: all of these
Correct Answer: the cell is the most primitive form of life
Correct Answer: eosinophils
Correct Answer: All of these
Correct Answer: It occurs in bidirectional manner
Correct Answer: all of these
Correct Answer: ?-haemolytic streptococci
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