BACTERIOPHAGES QUIZ

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

induction

integration

repression

infection

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YOUR ANSWER : ?

Which of the following is/are synthesized from late mRNA?

Proteins involved in cell lysis and phage release

Proteins that help with phage assembly without becoming part of the virion structure

Phage structural proteins

All of these

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In viruses with envelopes

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

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

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

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

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YOUR ANSWER : ?

A bacterial defense mechanism against bacteriophage is called

polymerization

lysogeny

concatamerization

restriction

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YOUR ANSWER : ?

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

All of these

Salmonella typhi

Staphylococcus aureus

Vibrio cholerae

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T-even phage binding to E. coli probably involves

hydrophobic interaction

all of these

covalent bonds

electrostatic interaction

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The filamentous bacteriopohage infect male E. coli cells by attaching to

lipopolysaccharide

the cell membrane

the cell wall

the tip of the pilus

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YOUR ANSWER : ?

__________ protein keeps the prophage dormant and prevents virus reproduction.

Enhancer

Promotor

Operator

Repressor

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YOUR ANSWER : ?

The procapsid is assembled with the aid of __________ proteins.

framing

form

scaffolding

ladder

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

T3

All of these

T2

P22

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