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Binary Fission
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What is
binary vision
?
It is the process by which
prokaryotic
organisms like
bacteria
divide and reproduce.
How does binary fission differ from
mitosis
and
meiosis
?
Binary fission
occurs in
prokaryotic
cells, while mitosis and meiosis occur in
eukaryotic
cells.
What are the main components of a bacterial cell?
A bacterial cell has a
cell wall
,
cell membrane
,
cytoplasm
, a large circular strand of
DNA
, and
plasmids
.
What is the function of
plasmids
in bacteria?
Plasmids contain
non-essential
genes that may be useful in certain situations.
What is a
flagellum
in
bacteria
?
A flagellum is a tail-like structure that some bacteria use for movement.
Why is
binary fission
considered a type of reproduction?
Because it involves one
organism
splitting into two organisms.
What are the two main steps a
bacterial cell
must complete before dividing?
It must grow larger and replicate its
genetic material
.
How does a
bacterial cell
arrange its
genetic material
before division?
The two large circular strands of
DNA
move to opposite sides of the cell.
What happens to the
plasmids
during
binary fission
?
The plasmids are distributed randomly between the two offspring cells.
What is the outcome of
binary fission
?
It results in two new
bacterial
cells.
How quickly can some
bacteria
divide
under optimal conditions?
Some bacteria can divide every
20
minutes.
How does the
bacterial
population
grow with each division?
The population
doubles
with each division.
If a
bacterial cell
divides every
20
minutes, how many cells will there be after
5 hours
?
There will be over
250,000
bacteria.
How do you calculate the number of bacterial cells after a certain time?
You multiply the original
cell count
by
2
raised to the number of
division cycles
.
How many
division cycles
occur in 3 hours if the mean division time is
30 minutes
?
There are
6
division cycles.
How many cells will be produced from one bacterial cell after 3 hours with a mean division time of
30 minutes
?
There will be
64
cells.
What factors can affect the
mean division time
of
bacteria
?
The species of bacteria and the environmental conditions.
How many
division cycles
occur in 4 hours if the mean division time is
20 minutes
?
There are
12
division cycles.
If a petri dish starts with 1,000
bacteria
and each cell divides every
20 minutes
, how many cells will there be after
4 hours
?
There will be
4,096,000
cells.
What is the process of
binary fission
in
bacteria
?
Bacterial cell grows larger.
Replicates its large circular DNA and
plasmids
.
DNA strands move to opposite sides.
New
cell wall
forms down the middle.
Cell divides into two new bacterial cells.
What are the
optimal conditions
for
bacterial growth
?
Warm temperature
Moist environment
Plenty of
nutrients
What
resources
are available for further learning on this topic?
Learning platform with
videos
Practice questions
Progress tracking
Playlist of related videos