MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

The term used for acquisition of naked DNA from its environment and its incorporation in their genome by a bacterium is

transduction

lysogenic conversion

transformation

conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

The plasmid which makes the host more pathogenic is

None of these

F factors

Metabolic plasmid

Virulence plasmid

TRUE ANSWER : ?
YOUR ANSWER : ?

Recombination of virus genomes occurs

by transduction

simultaneous infection of a host cell by two viruses with homologous chromosomes

by transformation

by transription

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is used by microbial genetisists as a tool?

Bacteriophage

Transposable elements

Plasmids

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The main difference between a self-transmissible and a mobilizable plasmid is that the self-transmissible plasmid

carries genes encoding the mating apparatus

usually has a transposon inserted into it

transfers both strands of the plasmid DNA

transfers antibiotic resistance genes

TRUE ANSWER : ?
YOUR ANSWER : ?

Plasmid that carries genes encoding enzymes, which degrade substances such as aromatic compounds, pesticides or sugar are

virulence plasmid

F factors

none of these

metabolic plasmid

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the cause for drug resistance in tuberculosis?

Transformation

Transduction

Mutation

Conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

The plasmids can be eliminated from a cell by the process known as

breaking

expulsion

fixing

curing

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following genetic elements carry the genes required for integration into host chromosomes?

Replicon

Transposons

Tandons

Plasmids

TRUE ANSWER : ?
YOUR ANSWER : ?

A microarray differs from a gene fusion in that, it

gives direct measurement of mRNA level

All of these

is not constructed by cloning

carries DNA segments from many different genes

TRUE ANSWER : ?
YOUR ANSWER : ?

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