Prokaryotes Flashcards
1
Q
Prokaryotes are unicellular
A
-unicellular organisms carryout all the functions of life
2
Q
They are able to carry out all the processes which are characteristics of living things
A
- metabolism
- response
- homeostasis
- growth
- reproduction
- nutrition
- excretion
3
Q
Cell Structure
A
- flagellum - movement
- nucleoid - region containing DNA which is ring shaped
- plasma membrane - controls entry and exit of substances
- cell wall - protective coating, can be gram-positive or gram-negative
- pilli - attachment, DNA transfer
- ribosomes - protein synthesis
- cytoplasm - contains enzymes for metabolism
4
Q
A
Not all bacteria have flagella
5
Q
Prokaryotes reproduce by binary fission
A
- cell replicates
- cells move to opposite sides of cell
- cells pulling in opposite directions cause DNA to split and divide
- two sets of DNA
