Explain how are the characteristics found in a prokaryotic cell similar to a eukaryotic cell? How are they different? Make a Venn-diagram to show the differences and region of overlap.

Sure, here's a step-by-step explanation of how prokaryotic and eukaryotic cells are similar and different:

Similarities:

1. Both prokaryotic and eukaryotic cells are the basic units of life and carry out all the necessary functions for their survival.
2. Both types of cells are enclosed by a plasma membrane, which protects the cell and regulates the movement of substances in and out of the cell.
3. Both have cytoplasm, a jelly-like substance where the cell's metabolic reactions occur.
4. Both have DNA as their genetic material, which carries the instructions for the cell's functions.
5. Both have ribosomes, which are the sites of protein synthesis.

Differences:

1. Prokaryotic cells are generally smaller and simpler than eukaryotic cells.
2. Prokaryotic cells do not have a nucleus. Their DNA is found in a region called the nucleoid. On the other hand, eukaryotic cells have a nucleus, which houses their DNA.
3. Prokaryotic cells do not have membrane-bound organelles, while eukaryotic cells do. These include the endoplasmic reticulum, Golgi apparatus, mitochondria, and in the case of plant cells, chloroplasts.
4. The cell wall of prokaryotic cells is usually composed of peptidoglycan, while in eukaryotic cells (specifically plant cells), it is made of cellulose.
5. Prokaryotic cells divide by binary fission, while eukaryotic cells divide by mitosis or meiosis.

Here's a simple Venn diagram to illustrate these points:

Prokaryotic Cells: 
- Smaller, simpler structure
- No nucleus
- No membrane-bound organelles
- Cell wall made of peptidoglycan
- Divide by binary fission

Both:
- Basic units of life
- Enclosed by a plasma membrane
- Have cytoplasm
- Have DNA
- Have ribosomes

Eukaryotic Cells:
- Larger, more complex structure
- Have a nucleus
- Have membrane-bound organelles
- Cell wall (in plants) made of cellulose
- Divide by mitosis or meiosis

Please note that this is a text-based representation of a Venn diagram. In a graphical representation, the points under "Both" would be in the overlapping region of two circles representing prokaryotic and eukaryotic cells.