How many organelles of a eukaryotic cell are considered to have had an independent existence during the early events of evolution?

In which part of mitochondria is $ATP$ generated?

Mitochondria supply most of the necessary biological energy by

$Assertion (S):$ $F_1$ particles contain the components necessary for oxidative phosphorylation.
$Reason (R):$ The mitochondrial matrix contains enzymes required for glycolysis.

Which of the following statements is $NOT$ associated with mitochondria?

Which process occurs in the part labeled 'a' in the given figure?