Cellular Respiration Worksheet
Name _________________________
Pd. ______
1. When you eat food that contains carbohydrates, you break down the carbohydrates into a monosaccharide called
_______________________. If you don’t use this monosaccharide, you body can store it in the liver in the form of
_______________________.
2. When your body metabolizes (breaks down) glucose, whether incompletely or completely, the first pathway glucose
molecules have to go through is ________________________
3. Where does this pathway take place? ___________________________
4. How many molecules of pyruvic acid are made from a single molecule of glucose? _______________
5.-6. Where can this product go to next? (broken down completely/incompletely)
__________________________________
__________________________________
7. What determines which pathway is taken? _______________________
8. What molecule stores the high-energy electrons (and hydrogen) removed from glucose in glycolysis? _________
8. How many reduced electron/hydrogen carrier molecules are produced in glycolysis? ______________
9. How many net ATP molecules are made during glycolysis? ________________
10. Via what process are these ATP molecules made? _______________________________________
11. In glycolysis, a molecule of ___________________ is split into 2 molecules of _______________.
These molecules are ultimately converted into 2_____________________.
12. What happens to the high-energy electrons (and hydrogen) held by NADH if there is no O 2 present?
13. Explain why this happens.
14. In the Aerobic System (complete breakdown of glucose), _____________________________ is the final electron
acceptor.
15. In order for pyruvic acid to enter the Citric Acid Cycle/Kreb’s Cycle, it needs to be altered to ____________________
16. In the above process (#15 Formation of Acetyl CoA), how many of these molecules are produced? ______________
17. In the above process (#15), how many ATP’s are produced directly? ______________
18. In the above process (#15) how many reduced electron/hydrogen carrier molecules are made per
pyruvic acid? _________
19. In the above process (#15) how many reduced electron/hydrogen carrier molecules are made per
glucose? _________
20. What brings the acetyl group into the Kreb’s Cycle? _________________________
21. With what molecule does the acetyl group entering the Kreb’s Cycle join? _____________________
22. What is the first intermediate compound in the Kreb’s Cycle? _________________________
23. In the Kreb’s Cycle (Citric Acid Cycle), how many ATP’s are produced directly per glucose?
______________
24. In the Kreb’s Cycle (Citric Acid Cycle), how many reduced NADH’s are produced per glucose? ______________
25. In the Kreb’s Cycle (Citric Acid Cycle), how many reduced FADH 2’s are produced per Acetyl CoA? ______________
26. In the Kreb’s Cycle (Citric Acid Cycle), how many CO 2 are released per turn of the cycle? ______________
27. In the Kreb’s Cycle (Citric Acid Cycle), how many CO 2 are released per glucose? ______________
From the beginning of Cellular Respiration: (the 3 stages covered so far)
28. How many ATP (net amount) have been produced thus far per glucose? _________________
29. How many reduced NADH molecules have been produced thus far per glucose? _________________
30. How many reduced FADH2 molecules have been produced thus far per glucose? _________________