The function of the $Mitochondria$ is .....

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.

The mitochondrial $DNA$ differs from the nuclear $DNA$ because of:

Select the incorrect statement w.r.t. mitochondria.

What is the approximate percentage of mitochondrial $DNA$ in a typical eukaryotic cell relative to the total cellular $DNA$?

In which organisms are mitochondria found?