Term
| What are characteristics of Archaea and Bacteria? |
|
Definition
1. Asexually reproduce by binary fission
*Type of cell division
2. Each species has ideal temperature & moisture for success
3. Some form endospores when conditions change: can survive boiling, freezing, lack of water
4. Three most common shapes
*Bacilli: Rod shaped
+ large surface area, best for absorption of nutrients
- can dry out easily
*Cocci: sphere-shaped
+ resistant to drying out
- small surface area for absorption of nutrients
*Spirilla
+ move easily in a corkscrew motion with flagella at both ends
- can dry out easily |
|
|
Term
| Where do archaebacteria live? |
|
Definition
| very extreme environments (archaebacteria=extremophiles) |
|
|
Term
| What are the three main types of extremophiles? |
|
Definition
- Methane lovers
- Salt lovers
- Heat lovers |
|
|
Term
| What are two unmentioned difference between archaebacteria an eubacteria? |
|
Definition
1. The cell walls differ in chemical makeup
2. Genetically different from each other |
|
|
Term
Eukaryotes are the least numerous prokaryote.
True False |
|
Definition
|
|
Term
| How are eubacteria classified? |
|
Definition
|
|
Term
| What are the three types of eubacteria? |
|
Definition
1. Decomposers
2. Parasites
3. Producers
*have chlorophyll |
|
|
Term
Eubacteria usually have cell walls.
True False |
|
Definition
|
|
Term
| What are five ways that bacteria can be helpful? |
|
Definition
1. Nitrogen fixing
* Bacteria make Nitrogen available for plants
2. Clean up pollution
3. Recycle nutrients
* Decomposers
4. Genetically engineered to produce medicine
* Inavline
5. Create food products
* Yogurt, cheese, pickles |
|
|
Term
| How do pathogenic bacteria cause disease? |
|
Definition
- Invade a host for nutrients & harm cells
- Cause harm to host by releasing toxins |
|
|
Term
| What are examples of things caused by harmful bacteria? |
|
Definition
| Cavities, ulcers, food poisoning, tuberculosis |
|
|
Term
| What are the 4 steps of binary fission? |
|
Definition
1. Cell grows
2. DNA replicates. Attaches to cell membrane.
3. DNA's separate as cell grows larger.
4. Cell splits into two cells. |
|
|
