The number in a cell depends on how much energy a cell needs. E.g.
Cardiac muscle cells ⟶ Need more energy ⟶ Have more mitochondria.
Fat cells ⟶ Need less energy ⟶ Have fewer mitochondria.
Rod-shaped or oval.
Made up of two membranes: Outer and inner membrane.
Covers the organelle.
Folded ⟶ forms shelves or tubules called cristae.
Contains oxidative enzymes.
Folding of the membrane increases its surface area ⟶ more enzymes can be accommodated.
Matrix inside the inner membrane contains more enzymes for energy metabolism.
Circular DNA strands.
Encode some of the mitochondrial proteins.
Powerhouse of the cell
Extract energy from different nutrients
Converts it into ATP
Used as an energy sources for various reactions.
About 95% of total ATPs used by cells are produced in mitochondria.
A reservoir of Intracellular Calcium.
Participate in Apoptosis.