MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

In lysogeny,

a bacteriophage genome is integrated into the bacterial genome

bacteria take up double stranded DNA from the environment

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

a bacteriophage transfers bacterial DNA

TRUE ANSWER : ?
YOUR ANSWER : ?

The plasmid-mediated properties is/are

resistance to antibiotics

fermentation of lactose

production of enterotoxin

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

curing

breaking

expulsion

fixing

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?

Replicative recombination

Mutagenic recombimation

General recombination

Site-specific recombination

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Conjugation

Mutation

Transformation

Transduction

TRUE ANSWER : ?
YOUR ANSWER : ?

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

transformation

transduction

lysogenic conversion

conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Transduction

Translation

Transformation

Conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

R factors involved in plant-microbe interactions are

essential for transfer of DNA to plant cells

also called opines

bacterial proteins

plant proteins

TRUE ANSWER : ?
YOUR ANSWER : ?

The plasmid which makes the host more pathogenic is

F factors

Metabolic plasmid

None of these

Virulence plasmid

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statement(s) is/are true in regards to F+ x F- mating events?

DNA is transferred from F+ to F- cells

No DNA is transferred because F+ cells are unable to perform conjugation

DNA is transferred from F- to F+ cells

No DNA is transferred because F- cells are unable to perform conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

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