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MCAT bio ch.1 the cell genetics & growth of prokaryotic cells

20 cards·by michaelamaclin
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binary fission
a simple form of asexual reproduction seen in prokaryotes
step 1 of binary fission
the circular chromosome attaches to the cell wall and replicates while the cell continues to grow in size
step 2 of binary fission
the plasma membrane and cell wall begin to grow inward along the midline of the cell to produce 2 identical daughter cells
plasmids
bacteria that contain extrachromosomal material
virulence factors
traits that increase how pathogenic a bacterium is
episomes
are capable of integrating into the genome of the bacterium
transformation
the integration of foreign genetic material into the host genome many gram negative carry out this process
conjugation
the bacterial form of mating
conjugation bridge
two cells that form bw them that allows for the transfer of genetic material
sex pili
the bridge is made from appendages that are found on the donor male
sex factors
to form the pilus bacteria must contain plasmids that contain the necessary genes
transduction
the only genetic recombination that requires a vector
vector
a virus that carries genetic material from one bacterium to another
obligate intracellular pathogens
viruses cannot reproduce outside of a host
bacteriophages
viruses that can infect bacteria
transposons
are genetic elements capable of inserting and removing themselves from the genome
lag phase
in a new environment the bacteria first adapt to the new local conditions
exponential phase/log phase
as the bacteria adapt growth causing an increase in the number of bacteria in the colony
stationary phase
the reduction of resources slows reproduction
death phase
occurs as resources in the environment have been depleted