Date _____
Cell Respiration
Use the website below as an introduction to the 3 steps
of cellular respiration:
Web Activity
Name ___________________
http://www.phschool.com/atschool/phbio/active_art/c
ellular_respiration/
To begin select “High” for the oxygen level, because
cellular respiration is an aerobic process meaning that it
can only occur in the presence of oxygen.
The first step of cellular respiration is glycolysis. Click on
the Play button to answer the questions about
glycolysis. You can pause the animation at any time.
Glycolysis:
1. Where does glycolysis take place in the cell?
2. During glycolysis, indicate the quantity of each molecule that is produced for every molecule of glucose:
3. Describe how NAD+ is converted into NADH?
4. During glycolysis does NAD+ become oxidized or reduced? How can you tell?
Krebs Cycle
5. Where in the cell does the Krebs cycle take place?
6. Explain the function of Coenzyme A in Krebs cycle.
7. During the Krebs Cycle, indicate the
quantity of each molecule that is
produced?
Date _____
Electron Transport
Cell Respiration Web Activity
Name ___________________
8. Describe the location of the electron transport chain.
9. What 2 molecules supply the electron transport chain with high energy electrons?
10. What happens eat time electrons are passed from protein to protein in the electron transport chain?
11. What happens each time hydrogen ions pass through ATP synthase?
12. Describe how ATP Synthase is able to make ATP?
13. How many molecule of ATP are produced from the energy from a single NADH molecule?
14. How many molecule of ATP are produced from the energy from a single FADH2 molecule?
15. Describe how water molecules are created in the electron transport chain?
Once the animation has finished playing, click on the button that says “Cellular Respiration Activity” on the left side of
the screen. Drag the terms on the left side of the screen to the correct location on the diagram. Once you have
finished, label the diagram below.