prokaryotic cells Flashcards
1
Q
what is a prokaryotic cell
A
- single cell organism with no membrane bound organelles
- no nucleus
2
Q
capsule
A
- slippery layer outside the cell wall
- protects the cell from desiccation and helps it to stick to surfaces
3
Q
cell wall
A
- made of peptidoglycan
- protects and supports each cell
4
Q
cell plasma membrane
A
- protects cells from its surroundings
- selectively permeable controlling entry and exit of materials
5
Q
nucleoid
A
- irregularly shaped region where singular, circular length of DNA is folded
- chromosomes are found here
- genetic material can be found, controls cellular activity
6
Q
plasmids
A
- double stranded DNA in a circular structure
- carries genes that may benefit the survival of the organism, such as antibiotic resistance
7
Q
ribosomes
A
- size is 70S, not surrounded by a membrane
- makes proteins
