43. PROKARYOTES Flashcards
1
Q
- What do Prokaryotes consist of?
A
- they are unicellular micro-organisms
- they consist of 1 prokaryotic cell
2
Q
- Which replicates faster:
Eukaryotes or Prokaryotes?
A
- Prokaryotes
- they are much smaller than Eukaryotic cells
3
Q
- Which 2 domains are Prokaryotes divided into?
A
- Bacteria
- Archaea
4
Q
- Where can we often find Prokaryotes?
A
- they can thrive almost everywhere
- even under extreme conditions
THESE CONDITIONS CAN BE:
- too salty
- too cold
- too dry
- too hot
5
Q
- What are the 2 main categories of the Domain Bacteria?
A
- Eubacteria
- Cyanobacteria
6
Q
- What is Eubacteria?
A
- this is bacteria that includes pathogenic bacteria
- this causes diseases
7
Q
- What is Cyanobacteria?
A
- this is non-pathogenic bacteria
- it contains chlorophyll
- it performs photosynthesis
- it produces oxygen
8
Q
- Where do we often find Cyanobacteria?
A
- it lives in lakes
- it lives in oceans
9
Q
- What chemical process does Cyanobacteria play an important role in?
A
- Nitrogen Fixation
- this is the conversion of nitrogen into Ammonia
- this is used by plants
10
Q
- What are Extremophiles?
A
- they are Achaea (Archaebacteria) that live in extreme conditions
11
Q
- What are the 3 types of Archaea?
A
- Halophiles
- Methanogens
- Thermoacidophiles
12
Q
- What are Halophiles?
A
- they are Archaebacteria that live in salty lakes
13
Q
- What are Methanogens?
A
- they are Archaebacteria that live in the digestive tract
- they are anaerobes
- they produce methane
14
Q
- What are Anaerobes?
A
- these are micro-organisms that can live in the absence of oxygen
15
Q
- What are Thermoacidophiles?
A
- they are Archaebacteria that live in acidic hot springs
- these springs are sulphur-rich
- they have an optimum temperature of 70-80°C
- they have a pH of 2-3
