BACTERIOPHAGES QUIZ

Which of the following properties is due to lysogenic conversion by phages?

All of these

Toxin production in Corynebacterium diphtheriae

Toxin production in Clostridium botulinum types C and D

Antigenic variation in Salmonella anatum

TRUE ANSWER : ?
YOUR ANSWER : ?

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

pox

all of these

plaque

pock

TRUE ANSWER : ?
YOUR ANSWER : ?

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

DNA phage

RNA phage

Temperate virus

Adsorbed virus

TRUE ANSWER : ?
YOUR ANSWER : ?

T-even phage binding to E. coli probably involves

hydrophobic interaction

covalent bonds

all of these

electrostatic interaction

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Salmonella typhi

Staphylococcus aureus

All of these

Vibrio cholerae

TRUE ANSWER : ?
YOUR ANSWER : ?

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

T3

P22

All of these

T2

TRUE ANSWER : ?
YOUR ANSWER : ?

The procapsid is assembled with the aid of __________ proteins.

ladder

framing

form

scaffolding

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Proteins involved in cell lysis and phage release

All of these

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

Phage structural proteins

TRUE ANSWER : ?
YOUR ANSWER : ?

One of the first enzymes synthesized by many bacteriophage is __________ , an RNA-dependent RNA polymerase.

RNA ligase

RNA polymerase

RNA transcriptase

RNA replicase

TRUE ANSWER : ?
YOUR ANSWER : ?

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

the cell membrane

lipopolysaccharide

the tip of the pilus

the cell wall

TRUE ANSWER : ?
YOUR ANSWER : ?

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