Question

Which of the following is a necessary reactant for cellular respiration to occur?

1) Carbon dioxide
2) Nitrogen
3) Oxygen
4) Water

Answer 1

I am stuck between carbon dioxide and oxygen, eliminated nitrogen and water

Answer 2

I would go with oxygen.

Answer 3

For animals, I would say oxygen.

Answer 4

In the Krebs cycle:
1) pyruvate is broken down into CO2 molecules
2) glucose is broken down into NADH and CO2
3) CO2 is converted into pyruvate and O2
4) NADH and CO2 are converted into ATP

Answer 5

Please start a new thread for a new question, (Sorry, it's the rules on OpenStudy)