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Bacteriophages

Bacteriophages
A bacterial defense mechanism against bacteriophage is called

restriction
lysogeny
concatamerization
polymerization

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

Staphylococcus aureus
All of these
Salmonella typhi
Vibrio cholerae

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

Proteins that help with phage assembly without becoming part of the virion structure
Phage structural proteins
All of these
Proteins involved in cell lysis and phage release

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

Toxin production in Corynebacterium diphtheriae
Toxin production in Clostridium botulinum types C and D
Antigenic variation in Salmonella anatum
All of these

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Bacteriophages
T-even phage binding to E. coli probably involves

covalent bonds
electrostatic interaction
hydrophobic interaction
all of these

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

RNA polymerase
RNA transcriptase
RNA replicase
RNA ligase

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