MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

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

Medisome

Lysogen

Lisosome

Episome

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Which of the following type of recombination does not require homologous sequences and is utilized by mobile genetic elements that move about chromosomes?

Mutagenic recombimation

Site-specific recombination

General recombination

Replicative recombination

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

transformation

conjugation

replication

transduction

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Diagnostic DNA probes have been developed for

Human immunodeficiency virus

Hepatitis B virus

All of these

Mycobacterium tuberculosis

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In lysogeny,

bacteria take up double stranded DNA from the environment

a bacteriophage transfers bacterial DNA

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

a bacteriophage genome is integrated into the bacterial genome

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What information can be generated by interrupted mating experiments?

Bacterial genome maps

DNA nucleotide sequences

Proteomics of the bacteria

Levels of DNA homology

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

None of these

non conjugative plasmids

conjugative plasmids

non self-transmissible plasmids

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

Cryptic plasmids

Non-conjugative plasmids

Conjugative plasmids

None of these

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

fixing

curing

breaking

expulsion

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Penicillin resistance in staphylococci is acquired due to

transformation

conjugation

transduction

mutation

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