All enzymes of the TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in the cytosol in prokaryotes. This enzyme is:

The overall goal of glycolysis, the Krebs cycle, and the electron transport system is the formation of:

1. ATP in small stepwise units.

2. ATP in one large oxidation reaction

3. Sugars

4. Nucleic acids