PrepBharat

1. Protein particles which can infect are called
a) Virons
b) Prions
c) Nucleoida
d) None of these

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2. In most of purple bacteria, the light harvesting centers are
a) B 850 & Fe-S
b) B 850 & B 875
c) B 845 & B 875
d) B 850 & B830

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3. Endotoxin produced by gramnegative bacteria is present in
a) Peptidoglycan
b) Lippolysacharide
c) Theichoic acid
d) Inner membrane

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4. Which one of the following was Gram negative, chemolithotrophic bacteria?
a) Siderococcus
b) E.coli
c) Spirellum
d) Mycoplasms

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5. The mode of reproduction which occurs in mycoplasma is
a) Budding
b) Bursting
c) Binary fission
d) Binary fusion

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6. Which one of the following is about Herpes viruses?
a) Icosahedral, with envelope, ds DNA
b) Polyhedral with envelope, ds DNA
c) RNA, helical with envelope
d) ds DNA, brick shape

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7. Which one of the following produce typical fried egg appearance colonies on solid media?
a) Mycobacteria
b) Mycoplasts
c) Mycoplasms
d) Bacteroides

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8. An organism that is osmophilic and has a specific requirements for sodium chloride resembles
a) Halophile
b) Basophile
c) Barophile
d) Xerophile

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9. A population of cells derived from a single cell are called
a) Monclonal cells
b) Clones
c) Protoplasts
d) Sub culture

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10. Hetrolactic acid bacteria produce
a) Lactic acid only
b) Lactic acid + H₂O + CO₂
c) Lactic acid + CO₂
d) Lactic acid + alchohol + CO₂

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