Which organelle is the "power house" of eukaryotic cell? Write in brief its functions.

Mitochondria is called the "power house" of eukaryotic cell.

Functions of mitochondria are -

• produce energy (in the form of ATP) required for the functioning of cells
• regulate free calcium ion concentration in cytosol
• participate in apoptosis or programmed cell death
• provide intermediates for the synthesis of various chemicals such as fatty acids, steroids and amino acids