MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

The transposase gene encodes an enzyme that facilitate

viral replication within a genome

None of these

site-specific integration of transposable elements

general recombination

TRUE ANSWER : ?
YOUR ANSWER : ?

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

transfers both strands of the plasmid DNA

transfers antibiotic resistance genes

carries genes encoding the mating apparatus

usually has a transposon inserted into it

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Tandons

Plasmids

Transposons

Replicon

TRUE ANSWER : ?
YOUR ANSWER : ?

The plasmid which makes the host more pathogenic is

None of these

Virulence plasmid

Metabolic plasmid

F factors

TRUE ANSWER : ?
YOUR ANSWER : ?

The correct term for the transfer of genetic material between bacteria in direct physical contact is

replication

transduction

transformation

conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

Recombination of virus genomes occurs

by transription

by transformation

by transduction

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

TRUE ANSWER : ?
YOUR ANSWER : ?

The plasmid-mediated properties is/are

all of these

fermentation of lactose

resistance to antibiotics

production of enterotoxin

TRUE ANSWER : ?
YOUR ANSWER : ?

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

none of these

metabolic plasmid

F factors

virulence plasmid

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following type of recombination does not require homologous sequences and is important for the integration of viral genomes into bacterial chromosomes?

Mutagenic recombimation

Replicative recombination

Site-specific recombination

General recombination

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following plamids do not possess information for self transfer to another cell?

None of these

Cryptic plasmids

Conjugative plasmids

Non-conjugative plasmids

TRUE ANSWER : ?
YOUR ANSWER : ?

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