James Robbins
The Kingdoms Of Life
The Different Kingdoms Of Life
- Archaebacteria
- Eubacteria
- Protista
- Fungi
- Plants
- Animalia
All life on Earth is Divided into two major catogories, Prokaryotes, and Eukaryotes. Eukaryotes have a separate membrane bound nucleus, numerous mitochondria and other organelles such as the Golgi Body within each of their cells. These areas are separated off from the main mass of the cell's cytoplasm by their own membrane in order to allow them to be more specialised. The nucleus contains all the Eukaryote cell DNA for instance and the Mitochondria are where energy is generated. The exception to this rule are red blood cells which have no nucleus and do not live very long.
Prokaryotes do not have a nucleus, mitochondria or any other membrane bound organelles. In other words neither their DNA nor any other of their metabolic functions are collected together in a discrete membrane enclosed area. Instead everything is openly accessible within the cell, though some bacteria have internal membranes as sites of metabolic activity these membranes do not enclose a separate area of the cytoplasm
