1. Three domains and Five kingdoms
Prokaryote
There are two types of cells: prokaryotic cells and eukaryotic cells. Prokaryotic cells have no membrane bound organelles. This means (among other things) that the cell’s DNA molecule isn’t enclosed in a membrane. Bacteria are prokaryotic cells
loop of DNA

2. Prokaryote
Eukaryote
loop of DNA
strands of DNA
nucleus
Eukaryotic cells have membrane bound organelles. The DNA molecules are enclosed in a membrane. This structure is called a nucleus.

3. In the five kingdom system of classification, the prokaryotes were placed in the Kingdom Monera.
Eukaryote
Kingdom
Monera

4. Protista Fungi Plantae Animalia
In the five kingdom system of classification, the eukaryotes were divided into four kingdoms: the Protista, the Fungi, the Plantae and the Animalia.
Prokaryote
Eukaryote
Kingdom
Monera
Kingdom
Protista
Kingdom
Fungi
Kingdom
Plantae
Kingdom
Animalia

5. Biologists realised that there were some bacteria in the kingdom Monera were more closely related to the eukaryotes than other bacteria. The kingdom Monera was divided into two domains: the Bacteria and the Archaea.
Prokaryote
Kingdom
Monera
Domain
Bacteria
Archaea

6. Protista Fungi Plantae Animalia
The other four kingdoms (Protista, Fungi, Plantae and Animalia) were placed together in the domain Eukaryota.
Prokaryote
Eukaryote
Kingdom
Monera
Kingdom
Protista
Kingdom
Fungi
Kingdom
Plantae
Kingdom
Animalia
Domain
Bacteria
Archaea
Domain
Eukaryota