What are the inner folds of the mitochondria called?

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

Select the incorrect statement regarding mitochondria.

Which of the following is present in mitochondria?

Cristae helps in

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