Download Name Cellular Energy Plato Tutorial Worksheet All living organisms

Name ______________
Cellular Energy
Plato Tutorial Worksheet
1. All living organisms require energy to function. True or False
2. The most important source of this energy comes from the food an organism consumes
or creates. So what does cellular respiration have to do with all this?
3. Where do cells store the energy released from sugars during cellular respiration?
4. How can ATP is converted to adenosine diphosphate, or ADP?
5. Cellular respiration can be aerobic or anaerobic. Give explanations of the two different
types.
6. ______ is the breakdown of the 6-carbon compound glucose into two molecules of the
3-carbon compound pyruvate.
7. Glycolysis occurs in ____ stages in the cytosol of the cell and can proceed with or
without____.
8. Glycolysis gives a total of ___ ATP molecules.
9. In addition, two molecules of a high energy compound called____ are also released.
10. Pyruvate diffuses into the mitochondria to enter the _____.
11. One cycle of the Krebs process generates how many ATP molecules?
12. The overall goal of the Krebs cycle is to ______ ______and ship it to the _______
________ _______where ATP is created very efficiently.
13. Most of the energy locked up in the original glucose molecule is released in ________
________ ________.
14. In __________, ETC is characterized by electron-carrying proteins that reside in certain
complexes in the inner mitochondrial membrane.
15. At the end of the chain, an ______ accepts and combines electrons with hydrogen ions
and oxygen to eliminate them as ______.
16. _______ acts as the final electron acceptor.
17. The ETS generates the remaining ________ ATP molecules synthesized in aerobic
respiration.
18. How does the ETC generate ATP?
19. As the electron-carriers NADH and FADH2 transfer electrons across the ETC, the energy
contained in these electrons is used to pump _______ ions from the mitochondrial
______ to the intermembrane space of the mitochondria.
20. When a _______ moves through channels and back to the matrix, the ATP synthase
rotates. After each rotation, it phosphorylates an ADP, synthesizing _____.
21. The passage of electrons from glycolysis to the electron transport chain is much simpler
in _________.
22. The extensive steps for transfer are not necessary in prokaryotes and they are thus able
to produce an average of ___ ATP for each glucose used.
23. The characteristic of anaerobic respiration is that the final electron acceptor is not
oxygen, but inorganic molecules such as ______ and _______, or inorganic atoms or
ions.
24. Anaerobic respiration occurs in the absence of oxygen. True or False
25. What happens to pyruvate if no oxygen is present? What process occurs?
26. What are the two types of fermentation?
27. How are the two different?
28. How can lactic acid fermentation occur in humans? Give an example.