BACTERIOPHAGES QUIZ

__________ protein keeps the prophage dormant and prevents virus reproduction.

Repressor

Promotor

Operator

Enhancer

TRUE ANSWER : ?
YOUR ANSWER : ?

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

infection

integration

induction

repression

TRUE ANSWER : ?
YOUR ANSWER : ?

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

P22

All of these

T3

T2

TRUE ANSWER : ?
YOUR ANSWER : ?

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

All of these

Proteins involved in cell lysis and phage release

Phage structural proteins

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

TRUE ANSWER : ?
YOUR ANSWER : ?

The procapsid is assembled with the aid of __________ proteins.

form

scaffolding

ladder

framing

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Adsorbed virus

RNA phage

DNA phage

Temperate virus

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Staphylococcus aureus

Salmonella typhi

All of these

Vibrio cholerae

TRUE ANSWER : ?
YOUR ANSWER : ?

T-even phage binding to E. coli probably involves

covalent bonds

hydrophobic interaction

electrostatic interaction

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which capsid symmetry is exhibited by most of the phages?

Icosahedral

Complex

None of these

Helical

TRUE ANSWER : ?
YOUR ANSWER : ?

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

the tip of the pilus

the cell membrane

the cell wall

lipopolysaccharide

TRUE ANSWER : ?
YOUR ANSWER : ?

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