Following name of form of streptococcus pneumoniae?

1. smooth form
2. rough form
3. rigid form
4. a and b both
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Answer: D
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Normal pathogenic form and virulent is?

1. smooth form
2. rough form
3. rigid form
4. random form
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Answer: A
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The mutant form of bacteria and non virulent is ?

1. smooth form
2. rough form
3. rigid form
4. random form
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Answer: B
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The agent responsible for transforming streptococcus remained undiscovered until?

1. 1950
2. 1944
3. 1960
4. 1970
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Answer: B
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The ability of bacteria to take up foreign DNA is called ?

1. competence
2. compotent
3. competition
4. complex
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Answer: A
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How many forms of competence ?

1. one
2. two
3. three
4. four
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Answer: B
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Name of competence following?

1. natural competence
2. artificial competence
3. complex competence
4. a and b both
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Answer: D
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The cells are chilled in the presence of divalent cations ?

1. cacl2
2. Nacl
3. HCL
4. HB
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Answer: A
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Cells are incubated with DNA then briefly heat shocked?

1. 20c
2. 42c
3. 50c
4. 60c
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Answer: B
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At 42c DNA briefly heat shocked in seconds?

1. 30-120
2. 40 to 50
3. 50 to 60
4. 60 to90
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Answer: A
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