Final answer:
The mitochondrial cristae enhance cellular respiration by increasing the surface area for reactions, and the mitochondria's own DNA and ribosomes support the production of necessary proteins.
Step-by-step explanation:
The feature of the mitochondrion that enhances cellular respiration is its inner membrane, which is extensively folded into structures known as cristae. These folds increase the surface area available for biochemical reactions, where the electron transport chain and ATP synthesis occur. Furthermore, mitochondria are equipped with their own DNA and ribosomes, which allow them to produce proteins that are essential for the respiration process. The mitochondrial matrix plays a crucial role in both the Krebs cycle and the electron transport chain, which are key components of aerobic respiration.