BACTERIOPHAGES QUIZ

The procapsid is assembled with the aid of __________ proteins.

form

scaffolding

ladder

framing

TRUE ANSWER : ?
YOUR ANSWER : ?

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

plaque

all of these

pox

pock

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Toxin production in Corynebacterium diphtheriae

Antigenic variation in Salmonella anatum

Toxin production in Clostridium botulinum types C and D

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

RNA transcriptase

RNA polymerase

RNA ligase

RNA replicase

TRUE ANSWER : ?
YOUR ANSWER : ?

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

All of these

Staphylococcus aureus

Vibrio cholerae

Salmonella typhi

TRUE ANSWER : ?
YOUR ANSWER : ?

A bacterial defense mechanism against bacteriophage is called

lysogeny

polymerization

restriction

concatamerization

TRUE ANSWER : ?
YOUR ANSWER : ?

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

repression

integration

infection

induction

TRUE ANSWER : ?
YOUR ANSWER : ?

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

All of these

T3

T2

P22

TRUE ANSWER : ?
YOUR ANSWER : ?

In viruses with envelopes

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

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

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

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

DNA phage

RNA phage

Adsorbed virus

Temperate virus

TRUE ANSWER : ?
YOUR ANSWER : ?