MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

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

Insertion sequence

Plasmid

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YOUR ANSWER : ?

Which type of plasmid can exist with or without being integrated into the host's chromosome?

Medisome

Lysogen

Episome

Lisosome

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

virulence plasmid

metabolic plasmid

none of these

F factors

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

natural transformation

generalized phage transduction

conjugal transfer by a self-transmissible plasmid

None of these

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What information can be generated by interrupted mating experiments?

DNA nucleotide sequences

Proteomics of the bacteria

Bacterial genome maps

Levels of DNA homology

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A microarray differs from a gene fusion in that, it

carries DNA segments from many different genes

All of these

gives direct measurement of mRNA level

is not constructed by cloning

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The plasmid-mediated properties is/are

fermentation of lactose

all of these

production of enterotoxin

resistance to antibiotics

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

Competent

Infected

Liable

Complementary

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Penicillin resistance in staphylococci is acquired due to

mutation

transformation

conjugation

transduction

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

transduction

conjugation

lysogenic conversion

transformation

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