prakryotic cells (cell structure) Flashcards
1
Q
size of prokaryotic cells
A
1micrometre
2
Q
1000micrometres is the same as how many mm
A
1
3
Q
bacteria are what type of cell
A
prokaryotic
4
Q
prokaryotic cells have (2)
A
- nucleus (just a circular strand of DNA)
- membrane bound organelles
5
Q
prokaryotic cells divide by
A
simple binary fission
6
Q
structural features of prokaryotic cells (7)
A
- cell wall
- cell-surface membrane
- capsule
- circular DNA
- flagella
- plasmids
- ribosomes
7
Q
a typical prokayotic cell diagram
A
8
Q
cell wall of bacteria made of
A
- murein (also called peptidoglycan)
- which is a glycoprotein ie. a mixture of polysaccharides and peptides
9
Q
what is a glycoprotein
A
mixture of polysaccharides and peptides
10
Q
the capsule is a
A
- layer of slime found on the outside of the cell
- protects the cell from the immune system (for example)
11
Q
the cell surface membrane controls
A
the movement of substances in and out of the cell
12
Q
the circular DNA is not bound to
A
proteins
13
Q
the circular DNA is genetic information used to make
A
proteins
14
Q
plasmids are
A
small circular sections of DNA found in cytoplasm
15
Q
plasmids carry
A
useful genes, e.g. antibiotic resistance
