After glycolysis has occurred once oxygen is available, Acetyl-CoA is produced and it enters the Krb’s or TCA cycle which takes place in the matrix of the mitochondria. TCA cycle is easily explained in the form of a diagram:
The following videos are also very useful!
A quick video that excitedly gives information of Carbohydrates,Lipids and Proteins. This vlog is extremely useful in cramming for any subject area. Enjoy 🙂 http://m.youtube.com/watch?v=H8WJ2KENlK0