Microbial Recombination and Gene Transfer

 

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Microbial Recombination and Gene Transfer

Question 1
The type of recombination that commonly occurs between a pair of homologous DNA sequences is,
A
mutagenic recombination
B
site-specific recombination
C
replicative recombination
D
general recombination

Question 2
In lysogeny,
A
a bacteriophage transfers bacterial DNA
B
bacteria take up double stranded DNA from the environment
C
DNA-degrading enzymes in the extracellular medium would stop the process
D
a bacteriophage genome is integrated into the bacterial genome

Question 3
Which of the following type of recombination does not require homologous sequences and is utilized by mobile genetic elements that move about chromosomes?
A
Mutagenic recombimation
B
Site-specific recombination
C
Replicative recombination
D
General recombination

Question 4
F factor plasmids play a major role in
A
conjugation
B
replication
C
transduction
D
trasnscription

Question 5
Who discovered transposons (jumping genes)?
A
Abelson
B
Harvey
C
McClintock
D
Griffith

Question 6
Recombination of virus genomes occurs
A
by transduction
B
by transription
C
simultaneous infection of a host cell by two viruses with homologous chromosomes
D
by transformation

Question 7
Which of the following statement describes plasmids?
A
Another name for a protoplast
B
A complex membrane structure that covers the chromosome of bacteria
C
Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria
D
None of the above

Question 8
The plasmid-mediated properties is/are
A
fermentation of lactose
B
production of enterotoxin
C
resistance to antibiotics
D
all of these

Question 9
Which of the following statement can describe horizontal transfer?
A
The synthesis of protein in RNA
B
The transmission of genetic information from one independent, mature organism to another
C
The transmission of genetic information from parent to offspring
D
The synthesis of RNA from a DNA template

Question 10
Which of the following plamids do not possess information for self transfer to another cell?
A
Cryptic plasmids
B
Conjugative plasmids
C
Non-conjugative plasmids
D
None of these
There are 10 questions to complete.

 

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