Which of what? I need more information to decipher that.
Answer:
The second step in cellular respiration is called the Krebs cycle. The Krebs cycle uses pyruvic acid to create ATP, along with additional molecules like NADH, FADH2, and CO2. The NADH and FADH2 molecules are used during the final step of cellular respiration, while the CO2 is exhaled
Explanation:
i do numerous questions with answers to get idea of questions that are tested
Protons: positive
neutrons: no charge
electrons: negative
