MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

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

None of these

Non-conjugative plasmids

Cryptic plasmids

Conjugative plasmids

TRUE ANSWER : ?
YOUR ANSWER : ?

What information can be generated by interrupted mating experiments?

Bacterial genome maps

Proteomics of the bacteria

DNA nucleotide sequences

Levels of DNA homology

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the term used for a segment of DNA with one or more genes in the centre and the two ends carrying inverted repeat sequences of nucleotides?

Transposon

Plasmid

None of these

Insertion sequence

TRUE ANSWER : ?
YOUR ANSWER : ?

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

breaking

curing

fixing

expulsion

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following transport bacterial DNA to other bacteria via bacteriophages?

Translation

Conjugation

Transduction

Transformation

TRUE ANSWER : ?
YOUR ANSWER : ?

In lysogeny,

DNA-degrading enzymes in the extracellular medium would stop the process

a bacteriophage genome is integrated into the bacterial genome

bacteria take up double stranded DNA from the environment

a bacteriophage transfers bacterial DNA

TRUE ANSWER : ?
YOUR ANSWER : ?

Penicillin resistance in staphylococci is acquired due to

conjugation

transduction

transformation

mutation

TRUE ANSWER : ?
YOUR ANSWER : ?

Recombination of virus genomes occurs

by transformation

by transription

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

by transduction

TRUE ANSWER : ?
YOUR ANSWER : ?

When composite transposons are formed

a small deletion occurs in the transposase gene of an IS element

two IS elements integrate into a chromosome with only a small distance separating them

a small deletion occurs in the transposase gene of an IS element and plasmid is integrated

an IS element integrates with another IS element with the help of a plasmid

TRUE ANSWER : ?
YOUR ANSWER : ?

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

F factors

virulence plasmid

none of these

metabolic plasmid

TRUE ANSWER : ?
YOUR ANSWER : ?