BACTERIOPHAGES QUIZ

Area of lysis on a bacterial lawn culture produced by a phage is known as

plaque

all of these

pock

pox

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__________ is specifically able to have a long-term relationship with the host known as lysogeny.

Temperate virus

DNA phage

RNA phage

Adsorbed virus

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Which of the following bacteria can be typed by phage typing method?

Vibrio cholerae

All of these

Staphylococcus aureus

Salmonella typhi

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In viruses with envelopes

the envelope and its imbedded proteins are derived from the host's membranes

the envelope is derived from the host but it contains embedded proteins coded by the viral nucleic acid

the envelope and the embedded proteins are encoded by the viral nucleic acid

the envelope is coded by the viral nucleic acids, but the proteins come from the host's membrane proteins

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Contractile sheath of the tail is present in which of the following phages?

All of these

P22

T3

T2

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__________ protein keeps the prophage dormant and prevents virus reproduction.

Enhancer

Promotor

Repressor

Operator

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Which capsid symmetry is exhibited by most of the phages?

Complex

None of these

Icosahedral

Helical

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The procapsid is assembled with the aid of __________ proteins.

form

framing

ladder

scaffolding

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The process by which phage reproduction is initiated in lysogenized culture is called

induction

infection

integration

repression

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T-even phage binding to E. coli probably involves

electrostatic interaction

covalent bonds

hydrophobic interaction

all of these

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