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Home⇒ Medical Science⇒ Microbiology⇒ Bacteriophages
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ One of the first enzymes synthesized by many bacteriophage is __________ , an RNA-dependent RNA polymerase. RNA replicase [other wrong options] [Discuss in forum] ![]() ![]() RNA transcriptase RNA polymerase RNA ligase |
Q2 ⇒ The procapsid is assembled with the aid of __________ proteins. scaffolding [other wrong options] [Discuss in forum] ![]() ![]() ladder framing form |
Q3 ⇒ Which of the following properties is due to lysogenic conversion by phages? All of the above [other wrong options] [Discuss in forum] ![]() ![]() Toxin production in Corynebacterium diphtheriae Toxin production in Clostridium botulinum types C and D Antigenic variation in Salmonella anatum |
Q4 ⇒ The process by which phage reproduction is initiated in lysogenized culture is called induction [other wrong options] [Discuss in forum] ![]() ![]() infection integration repression |
Q5 ⇒ __________ protein keeps the prophage dormant and prevents virus reproduction. Repressor [other wrong options] [Discuss in forum] ![]() ![]() Operator Promotor Enhancer |
Q6 ⇒ Which capsid symmetry is exhibited by most of the phages? Icosahedral [other wrong options] [Discuss in forum] ![]() ![]() Helical Complex None of these |
Q7 ⇒ The filamentous bacteriopohage infect male E. coli cells by attaching to the tip of the pilus [other wrong options] [Discuss in forum] ![]() ![]() lipopolysaccharide the cell wall the cell membrane |
Q8 ⇒ Which of the following bacteria can be typed by phage typing method? All of these [other wrong options] [Discuss in forum] ![]() ![]() Staphylococcus aureus Salmonella typhi Vibrio cholerae |
Q9 ⇒ Which of the following is/are synthesized from late mRNA? All of the above [other wrong options] [Discuss in forum] ![]() ![]() Phage structural proteins Proteins that help with phage assembly without becoming part of the virion structure Proteins involved in cell lysis and phage release |
Q10 ⇒ T-even phage binding to E. coli probably involves electrostatic interaction [other wrong options] [Discuss in forum] ![]() ![]() hydrophobic interaction covalent bonds all of these |
Q11 ⇒ Area of lysis on a bacterial lawn culture produced by a phage is known as plaque [other wrong options] [Discuss in forum] ![]() ![]() pock pox all of these |
Q12 ⇒ __________ is specifically able to have a long-term relationship with the host known as lysogeny. Temperate virus [other wrong options] [Discuss in forum] ![]() ![]() Adsorbed virus RNA phage DNA phage |
Q13 ⇒ In viruses with envelopes the envelope is derived from the host but it contains embedded proteins coded by the viral nucleic acid [other wrong options] [Discuss in forum] ![]() ![]() 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 and its imbedded proteins are derived from the host's membranes |
Q14 ⇒ Contractile sheath of the tail is present in which of the following phages? T2 [other wrong options] [Discuss in forum] ![]() ![]() T3 P22 All of these |
Q15 ⇒ A bacterial defense mechanism against bacteriophage is called restriction [other wrong options] [Discuss in forum] ![]() ![]() concatamerization polymerization lysogeny |