Mitochondria have ______ membrane coverings.

The correct answer is 2.Key Points

• Mitochondria have two membrane coverings, which are known as the outer and inner membranes.
• The outer membrane is smooth and encloses the entire organelle, while the inner membrane is highly folded and contains numerous proteins and enzymes involved in cellular respiration.
• The space between the two membranes is known as the intermembrane space and is important for the transport of molecules in and out of the mitochondria.
• The number of membrane coverings is a unique characteristic of mitochondria and distinguishes them from other organelles in the cell.

Additional Information

• Because they are in charge of cellular respiration, the mitochondria are referred to as the "powerhouse" of the cell.
• Adenosine triphosphate (ATP) is produced as the energy is released.
• It is the cell's energy currency.