Parts of a microscope and Bacterial cells Flashcards
stage
where the slide is placed
eye piece
the lens which you look through
the arm
holds the lenses and bases together
How long are most bacteria cells?
1micrometre in length.
They range between 0.1-10 micrometres
What is unusual about genetic material in bacterial cells?
It isn’t contained within a nucleus. It is free within a cytoplasm.
What are plasmids
A small ring of DNA that codes for specific reasons
What are flagella and what are they used for?
they are wip like features which are used to move a cell
Bacterial cells are prokaryotic cells. what does this mean
This means that they don’t have a nucleus
In the correct conditions, how often will bacteria double?
every 20 minutes
When does bacteria divide faster
when they have,
-warm temperature
-nutrients
-
How many times in 1 hour?
8
0
1/3
2/3
1
1 1/3
1 2/3
2
2 1/3
2 2/3
3
3 1/3
3 2/3
4
0- 1
1/3 - 2
2/3 4
1 8
1 1/3 16
1 2/3 32
2 64
2 1/3 128
2 2/3 256
3 512
3 1/3 1024
3 2/3 2048
4 4096
(double the number each time)
Bacteria divide by a mechanism known as
binary fission
