How many membranes does a typical mitochondrion have?

• A. Three membranes
• B. Four membranes
• C. Two membranes (an outer membrane and an inner membrane)
• D. One membrane

Answer: (C)

Verified step by step guidance

1. Recall the basic structure of a mitochondrion, which is an organelle found in eukaryotic cells responsible for energy production.
2. Understand that mitochondria have a double membrane system: an outer membrane and an inner membrane.
3. The outer membrane encloses the entire organelle, while the inner membrane folds inward to form structures called cristae, increasing the surface area for biochemical reactions.
4. Recognize that the space between these two membranes is called the intermembrane space, and the area inside the inner membrane is the mitochondrial matrix.
5. Therefore, the typical mitochondrion has exactly two membranes: one outer membrane and one inner membrane.