In viruses with envelopes 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 coded by the viral nucleic acids, but the proteins come from the host's membrane proteins the envelope is derived from the host but it contains embedded proteins coded by the viral nucleic acid TRUE ANSWER : ? YOUR ANSWER : ?
T-even phage binding to E. coli probably involves electrostatic interaction all of these hydrophobic interaction covalent bonds TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following bacteria can be typed by phage typing method? Vibrio cholerae All of these Salmonella typhi Staphylococcus aureus TRUE ANSWER : ? YOUR ANSWER : ?
Contractile sheath of the tail is present in which of the following phages? P22 T2 T3 All of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following properties is due to lysogenic conversion by phages? Toxin production in Clostridium botulinum types C and D Toxin production in Corynebacterium diphtheriae Antigenic variation in Salmonella anatum All of these TRUE ANSWER : ? YOUR ANSWER : ?
Which capsid symmetry is exhibited by most of the phages? Helical Complex Icosahedral None of these TRUE ANSWER : ? YOUR ANSWER : ?
Area of lysis on a bacterial lawn culture produced by a phage is known as plaque pock pox all of these TRUE ANSWER : ? YOUR ANSWER : ?
One of the first enzymes synthesized by many bacteriophage is __________ , an RNA-dependent RNA polymerase. RNA ligase RNA replicase RNA transcriptase RNA polymerase TRUE ANSWER : ? YOUR ANSWER : ?
The procapsid is assembled with the aid of __________ proteins. scaffolding form framing ladder 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 Proteins that help with phage assembly without becoming part of the virion structure Phage structural proteins TRUE ANSWER : ? YOUR ANSWER : ?