Microbial Genetics : USMLE step 1 , AIPGMEE , AIIMS MD/MS entrance online Test

Plasmids are always present as a single copy per host cell.


Plasmids often confer antibiotic resistance on the bacteria that contain them.


Transposable elements are unable to cause mutations in the host cell


The transformation processes of all bacteria are identical.


DNA transformation involves the transfer of DNA via


The mismatch repair system will repair


When DNA from an ampicillin resistant organism is brought into an ampicillin sensitive organism by transformation and the product is grown on agar containing ampicillin


In transformation, both strands of donor DNA enter the recipient cell.


Donor DNA is combined with recipient DNA by homologous recombination.


A bacteriophage is a


When a bacteriophage carrying bacterial DNA infects a new bacterium


When a recipient bacterial cell receives bacterial DNA via transduction


A phage particle may carry pieces of bacterial DNA from one bacterium to another inside a viral protein coat.


Bacterial fragments from the donor bacterium may be integrated into the recipient bacterial chromosome


The F plasmid


The F pilus


When an F+ donor gives an F plasmid to an F- recipient


Contact is required between an F+ and an F- cell for conjugation to occur.


When F+ cells are mixed with F- cells, eventually all the cells will become F+.


HFr refers to


In conjugation of an HFr cell with an F- cell


In conjugation, the donor chromosome is transferred as


In conjugation of an HFr cell and an F- cell, the entire genome of the HFr cell is usually transferred to the recipient cell




























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After reading this chapter you should be able to:
discuss the nature of procaryotic recombination
distinguish horizontal gene transfer from vertical gene transfer
compare and contrast conjugation, transformation, and transduction
discuss how transposable elements can move genetic material between bacterial chromosomes and within a chromosome to cause changes in the genome and the phenotype of the organism
discuss the use of conjugation, transformation, and transduction to map the bacterial genome
discuss the methods used to map viral genes

Comments
Satish Kumar
By: Satish Kumar
363 days 13 hours 33 minutes ago

Transformation is the process in which bacteria take the nacked dna which is differ from conjugation

Satish Kumar
By: Satish Kumar
363 days 13 hours 32 minutes ago

It is very effective and good test.keep it up

GIST Gujarat Institute of Science and Technology
By: GIST Gujarat Institute of Science and Technology
362 days 6 hours 37 minutes ago

lecture on
Microbial Genetics : USMLE step 1 , AIPGMEE , AIIMS MD/MS entrance
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