Bacteria Flashcards
1
Q
What types of shapes can a bacteria by?
A
- Bacilli
- Vibrios
- Cocci
- Diplococci
- Streptococci
- Staphylococci
- Spirilla
- Spirochaetes
2
Q
What are the components of bacteria?
A
- Capsule
- Cell wall
- Cell (plasma) membrane
- Cytoplasm
- Chromosomes
- Plasmids
- Pilli
- Flagella
3
Q
What is the colour of gram +ve bacteria?
A
Purple/blue
4
Q
What is the colour of gram -ve bacteria?
A
Pink/red
5
Q
What is binary fission?
A
This is where the bacteria does the replication process
6
Q
What are the optimal conditions?
A
- Water
- Essential nutrients
- Correct pH
- Correct temperature
7
Q
What is the process of spore formation?
A
The chromosomes in the bacterial cell replicates, a septum forms and a forespore is produced, A spore coat is formed around the forespore, then it is released by rupture of the parent cell
8
Q
What are exotoxins?
A
Toxins are released into surrounding environment
9
Q
What are endotoxins?
A
Part of the cell wall of certain bacteria released when the cells die and disintegrate
