How many membranes does a typical mitochondrion have?

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

Answer: (A)

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, meaning they are enclosed by two distinct membranes.
3. Identify the two membranes: the outer membrane, which encloses the entire organelle, and the inner membrane, which is folded into structures called cristae to increase surface area.
4. Recognize that these two membranes create two separate compartments inside the mitochondrion: the intermembrane space (between the outer and inner membranes) and the matrix (inside the inner membrane).
5. Conclude that the correct number of membranes in a typical mitochondrion is two: one outer membrane and one inner membrane.