What are called polymorphonuclear cells?

Mitochondria are called power house of the cell as they:

Sertoli cells are called nurse cells.

Organisms that are made of many cells are called____.

Why Mitochondira is called as 'the power house of a cell'?

_________ is called power house of the cell.

Select the correct statements regarding the characteristics of acquired immunity. (i) Cell-mediated immunity is responsible for acquired immunity. (ii) It produces a primary response of low intensity. (iii) Active and passive immunity are types of acquired immunity, (iv) Polymorphonuclear leucocytes and natural killer cells are involved in acquired immunity.