Ch 1.2 Bac and Eu cell growth Flashcards
1
Q
What came first Pro or Eu?
When was it?
A
- Prokaryotes came first
- about 3.5 billion years ago
2
Q
What was the last universal common ancestor?
When was it?
A
- LUCA
- 3.5-3.8 billion years ago
3
Q
Draw a phylogenetic tree
A
Start LUCA (pro)two branches to bac and the other one branches of into arch an eu
4
Q
What are the 3 domains
A
- Bac
- Eu
- Arch
5
Q
What domain had the greatest biodiversity?
A
Bac
6
Q
How do pro vs, Eu replicate?
A
- pro: binary fission
- Eu: meiotic cell division
7
Q
What are the phases of bac growth? Describe them
A
- lag: bac getting used to new environment, make tools to survive, no net growth
- exponential: start replication
- stationary: start run out nutrients net growth is zero cuz death = dividing cells
- death: start dying
