Biology MCQ - Biology Notes Online

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321 Electron microscope gives magnification up to

A: 100 X

B: 2000 X

C: 50,000 X

D: 2,00,000 X

Microbiology MCQ
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322 The hanging drop method for motility study was first introduced by

A: Robert Koch

B: Louis Pasteur

C: Jenner

D: Leeuwenhoek

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323 Lederberg and Tatum (1946) described the phenomena of

A: Conjugation

B: Transformation

C: Mutation

D: Plasmids

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324 Monoclonal antibodies are associated with the name of

A: Burnet

B: Medawar

C: Milstein & Kohler

D: Owen

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325 The capacity of a given strain of microbial species to produce disease is known as

A: Pathogen

B: Virulence

C: Infection

D: None of these

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326 The resolution power of the compound microscope is

A: 0.2 micron

B: 0.2 millimeter

C: 0.2 Angstrom units

D: 0.2 centimeter

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327 Griffith (1928) reported the phenomenon of transformation first in

A: H. influenzae

B: Bacillus species

C: Pneumococci

D: E.coli

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328 In an Electron Microscope, the source of electrons is from

A: Mercury lamp

B: Tungsten metal

C: Both a and b

D: None of these

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329 The minimum number of bacteria required to produce clinical evidence of death in a susceptible animal under standard conditions is called

A: LD50

B: ID

C: MLD

D: All of these

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330 Hybridoma technique was first discovered by

A: Kohler and Milstein

B: Robert Koch

C: D'Herelle

D: Land Steiner

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