Which of the following cell organelles is known as the powerhouse of the cell?

Identify the $X, Y$ and $Z$ parts from the given figure of a mitochondrion:

Mitochondria are usually found in

The figure below shows the structure of a mitochondrion with its four parts labelled $A, B, C$ and $D$. Select the part correctly matched with its function.

Which of the following cell organelles is responsible for generating $ATP$ by extracting energy from carbohydrates?

Which statement is correct regarding mitochondria?