All living things are made up of cells that can be divided into two categories: prokaryotic and eukaryotic. Prokaryotic cells are simpler with no membrane-bound organelles and a single circular chromosome, while eukaryotic cells are more complex with organelles and multiple linear chromosomes surrounded by a nuclear membrane. The key differences are that prokaryotic cells are generally smaller, lack a nucleus and organelles, and have a single circular chromosome, while eukaryotic cells are larger with membrane-bound nuclei and organelles and multiple linear chromosomes.

1. The cell Learning objective: Compare The structure of Prokaryotic cell and Eukaryotic cell The cell

2. All living things are made up of cells. The cell is the basic unit of life. Based on the organization of their cellular structures, all living cells can be divided into two groups: prokaryotic and eukaryotic. Animals, plants, fungi, protozoans, and algae all possess eukaryotic cell types . Only bacteria have prokaryotic cell types .

3. Prokaryotic Cell

4. Prokaryotes / Prokaryotic First organisms, simple structure Generally smaller than eukaryotic Has one circular chromosome which floats in cytoplasm Has no membrane bound organelles Can have slime layer / pili / capsule Bacteria and some protists

5. Eukaryotic cell (Plant & animal cell)

6. Eukaryotes / Eukaryotic More evolved, complex cells Generally larger than prokaryotic Has two or more chromosomes Has some membrane bound organelles Has mitochondria Some protists, most fungi, most plants, and all animals

7. Summary

8. Mitotic or meiotic By fission or budding Cell division Present Absent Cell Organelles Present Absent Nucleolus More than one linear Single circular Chromosome Surrounded by a nuclear membrane Not surrounded by nuclear membrane Nuclear region Generally large (5-100m) Generally small (1-10m) Size Eukaryotic cell Prokaryotic cell Parameter

9. Eukaryotic cell and Prokaryotic cell

10. Reference from: <http://en.wikibooks.org/wiki/Human_Physiology/Cell_physiology <http://www.egurucool.com/academics/ess/webarea/samples/10114708/758/34_36_1_8_2.html