Question

Describe the ultra structure of a prokaryotic cell?

Answer 1

A prokaryotic cell consists of a cell envelope made of the cell wall and the cell membrane. This imparts the specific shape to the cell and also protects the cell from various environmental conditions. It contains cytoplasm, a single primary dsDNA that controls all the activity of the cell. In addition it may have genetic material called the plasmids. Ribosomes, reserve food material, proteins, fats, enzymes are other components of the cytoplasm. The cell membrane is folded at places to from respiratory structure called the mesosomes that produce ATP. The ribosomes in a prokaryotic cell are of the 70S type.

Example, E.coli, Shigella, Lactobacillus etc