Identify the cellular structures with the help of the following clues :

1. It is a colourless, translucent, viscous liquid found between the cell membrane and nuclear membrane.
2. It contains chromosomes.
3. It traps solar energy for the process of photosynthesis.
4. The selectively permeable, thin, delicate and flexible membrane.
5. The hereditary unit which is located on the chromosomes.

Name the scientist who:

1. developed a simple microscope.
2. developed a compound microscope.

Who coined the term "cell"?

Briefly describe the three essential parts of a cell.