Which organism is know as living fossils
Archaebacteria
What is a special feature of archaebacteria?
Absence of mucopeptide substances in the cell wall.
What makes archaebacteria survive extreme conditions?
Pseudomurein, namely
- N acetyl glucose
- N acetyl talosaminuronic acid
Anaerobic forms of archaebacteria-
With examples
-methanogens
Eg methanobacterium rumination
-halophiles
Eg- halobacterium and halococcus
-thermo acidophiles
Eg-thermoplasma
What is special about eubacteria?
Rigid cell wall and flagellum (if motile)
Types. Of eubacteria
- Bacteria
- Cyanobacteria (blue green algae)
- Mycoplasma
What chemical component makes Cyanobacteria photosynthetic autotrophs?
Chlorophyll a
Features of Cyanobacteria
- unicellular
- colonial
- filamentous
- marine
- terrestrial
What are Cyanobacterial colonies surrounded with?
Gelatinous sheath
Which Cyanobacteria are nitrogen fixers?
Heterocysts.
Eg-
- nostoc
- Anabaena
Inorganic substances chemosynthetic autotrophic Bacteria oxidise?
Where is released oxygen used?
- Nitrites
- Nitrates
- ammonia
In production of ATP.
Which compounds do eubacteria recycle?
- Nitrogen
- Phosphorus
- Iron
- Sulphuric
Where do Heterotropic bacteria belong?
Eubacteria
What are diseases caused by heterotrophic bacteria?
- Cholera
- Typhoid
- Tetanus
- Citrus Canker
Smallest living cells know to survive without oxygen.
Mycoplasma
Features of mycoplasma
- Lacks cell wall
- Pathogenic
- smallest living cell
- can survive without oxygen
What are the constituents of kingdom monera?
- Archaebacteria
- Eubacteria
