MICRO Chapter 9
In bacterial conjugation, which term refers to a recipient cell that does not have a fertility plasmid?
F-
Which type of plasmids confer the ability of an organism to survive treatment by antibiotics?
R factors
How do an Hfr cell and an F+ cell differ?
The plasmid is integrated into the chromosome of an Hfr cell but not in an F+ cell
Which gene transfer method involves the uptake of free DNA by competent bacterial cells?
Transformation
Plasmids are found in which types of organisms?
bacteria, fungi
Plasmids can be found in both _______ and _______
bacteria; fungi
R factors are specifically associated with which mechanism of recombination?
conjugation
________ refers to the transfer of genes between donor and recipient microorganisms
recombination
Gram-positive cells conjugate and transfer genetic material through which structure?
Pore in cell wall
Transduction occurs through:
a bacteriophage
__________ in bacteria refers to horizontal gene exchange via pili
conjugation
Donor and recipient bacterial cells are connected by the sex _______ during conjugation
pilus
A _______ is a small circular segment of DNA found in the cytoplasm of bacteria that is capable of independent replication and usually contains nonessential genes
plasmid
"Jumping genes" are known as _______
transposons