MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

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

breaking

expulsion

fixing

curing

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

lysogenic conversion

transduction

conjugation

transformation

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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

None of these

Plasmid

Insertion sequence

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Which of the following statement describes plasmids?

Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria

Another name for a protoplast

A complex membrane structure that covers the chromosome of bacteria

None of these

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In the extracellular medium, DNA-degrading enzymes would likely be to prevent transfer of DNA by

natural transformation

None of these

conjugal transfer by a self-transmissible plasmid

generalized phage transduction

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What is term used for a bacterial cell that is able to take up naked DNA?

Complementary

Competent

Infected

Liable

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Which of the following term describes the relationship between a virus and host where no new viral particles are produced and the viral genome is replicated along with host chromosome?

Lysogeny

Lysis

Transformation

Conjugation

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The plasmid-mediated properties is/are

resistance to antibiotics

production of enterotoxin

all of these

fermentation of lactose

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The term used for plasmids possessing both RTF and r determinants is

non self-transmissible plasmids

conjugative plasmids

non conjugative plasmids

None of these

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

All of these

Plasmids

Transposable elements

Bacteriophage

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