endoplasmic recticulcum

• the passage in the cell. conduction of materials inside the cell takes place through this organellle 
• also known as cytoskeleton as it provides firmness and shape to cell
  

mitochondrin

• power house of cell. helps in the production and storage of energy .
• abundantly seen in the cells of liver , brain and muscles where energy requirement is high
  

robert hooke . history

The cell was first discovered by a scientist named robert hooke  . robert hooke was the first scientist who observed cell with a simple micro scope . he observed the section of cork through a micro scope and called the tinny sections cell. 

                                        sir robert hooke

                                                his cell .