Bacteria
Tags
bio/astro
bio/eco
cegep/3
Word count
78 words
Reading time
1 minute
Domain of life
- Prokaryotic
- Most are non pathogenic
Classification
- By shape:
- Sphere: cocci
- Rod: bacilli
- Spiral: spirillum
By metabolism:
- Chemoheterotroph: decomposers, parasites, mutualistic symbionts
- Presence of flagella
- Gram staining
- Positive:
- Purple stain
- Plasma membrane < thick cell wall
- Penicillin sensitive
- Negative:
- Pink stain
- Plasma membrane < thin cell wall < outer membrane
- Penicillin resistant
- Positive:
Ajitani Hifumi