What is nucleus? Why is its called as "brain of the cell"? Describe its ultrastructure with diagram. What are the functions of it?

What is called 'brain' of the cell?

(a) What is mitochondria? Why it is called as "power house of cell"? Describe its ultrastructure with diagram. State the functions of mitochondria. (b) Draw a labelled diagram of mitochondrion.

What is cell wall? Describe its ultra structure. What is its function?

What is ER? Describe its ultra structure. What is its function?

What is centrosome? Describe its ultrastructure. State the functions of centrosome.

Describe the ultrastructure of nucleus.

Describe the ultrastructure of a plant cell.

Describe the ultrastructure of cilia and flagella and state their functions.

Why is nucleus called director of the cell?

Why is nucleus called director of the cell ?