Answer:
I can try to help you with your question. the **Krebs cycle** transfers energy from the molecules produced by glycolysis to electron carriers, such as **NADH** and **FADH2**, which will be used in the electron transport chain to produce ATP. Therefore, the chemical reactions that transfer energy to these electron carriers are the ones that involve **NAD+** and **FAD** as reactants. Based on the diagram, these reactions are steps 3, 4, 6, and 8 of the Krebs cycle. I hope this helps you.
Step-by-step explanation: