Question

Main function of mitochondria in a cell is

• A. Secretion
• B. Excretion
• C. Osmoregulation
• D. Respiration

Answer 1

Answer: (D)

Respiration

• The mitochondria is a double-membraned cell organelle, known as the powerhouse of the cell which is present in all eukaryotic cells.
  
• It has an outer membrane and an inner membrane.
• The inner mitochondrial membrane has folds called cristae which helps in increasing the surface area.
  
• The inner membrane of the mitochondria is the site of the electron transport chain (aerobic respiration).
• So, the correct answer is 'Respiration'.