Bacteria and Gram Staining - Mock Test 24

Question 231

In which of the follwing microorganism, conjunction tube was not produced during conjunction process?

A) Thiobaillus thiooxidence B) T. ferroxidance C) Tetrahymena thermophila D) Cryptaporiclium

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Question 232

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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Question 233

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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Question 234

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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Question 235

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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Question 236

The mode of reproduction which occurs in mycoplasma is?

A) Budding B) Bursting C) Binary fission D) Binary fusion

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Question 237

Which one of the following was Gramnegative, chemolithotrophic bacteria?

A) Siderococcus B) E.coli C) Spirellum D) Mycoplasms

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Question 238

Endotoxin produced by gramnegative bacteria is present in?

A) Peptidoglycan B) Lippolysacharide C) Theichoic acid D) Inner membrane

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Question 239

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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Question 240

Protein particles which can infect are called?

A) Virons B) Prions C) Nucleoida D) None of these

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