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CP Biology
1
Organizing Cellular Respiration
Name ________________
Class ____
1. How many “calories” make up 1 Calorie?
2. What is the pathway that begins cellular respiration?
3. Write the summary equation for cellular respiration.
4. What is the advantage of the “stepwise process” of
cellular respiration?
5. Where in the cell does glycolysis occur?
6. Where in the cell does the Krebs cycle occur?
7. Where in the cell does electron transport occur?
8. What does the term “glycolysis” mean?
9.
What is the energy expenditure of the cell during the
beginning (steps 1 – 4) of glycolysis?
10. What is the net gain of ATP from glycolysis?
11. What type of molecule is NAD+ and what is its role?
12. What, if any, changes occur in the pathway of
glycolysis in the absence of oxygen?
13. How does fermentation allow glycolysis to occur when
oxygen is not present?
CP Biology
2
Organizing Cellular Respiration
Name ________________
Class ____
14.What are the two main types of fermentation? Give the
summary reaction of each chemical pathway. Include the
beginning substances, the intermediate reactions, the
final products and whether ATP is used or made. Give an
example of cells that use each pathway.
15.What type of molecule is acetyl Coenzyme A (acetylCoA)
and state its function.
16.What three possible pathways may pyruvate take after
glycolysis.
17.What is the type of fermentation that is used in the
baking industry and what happens to the “end-product”
of that fermentation process in the baked product?
18.What is the final electron acceptor in the electron
transport system of the mitochondria?
19.In the presence of oxygen, how is the pyruvic acid from
glycolysis used?
20.What chemical compound is the starting point for the
Krebs Cycle?
21.Name two additional synonyms for the Krebs Cycle and
explain why they are so-named.
CP Biology
3
Organizing Cellular Respiration
Name ________________
Class ____
22.Where in the cell does the Krebs cycle occur and from
what series of reactions does it receive its material
that enters that cycle?
23.What happens to each of the carbon atoms in pyruvate
when it is broken down?
24.What happens to the CO2 produced as a by product of
cellular respiration?
25.What is the role of phosphofructokinase and why is it a
particularly important step?
26.What is the “energy tally” from one molecule of
pyruvate (pyruvic acid) during the Krebs cycle? In what
molecules is that energy contained?
27.What are the reduction forms of NAD+ and FAD?
28.What is the function of the electron transport chain in
cellular respiration and state where in the eukaryotic
cell it is found?
29.Where do the electrons that exit the Krebs cycle go and
what are they used for?
30.From which specific molecules does the electron
transport chain obtain the “high-energy” electrons?
CP Biology
4
Organizing Cellular Respiration
Name ________________
Class ____
31.What is the process of chemiosmosis? Include where and
how it occurs in the mitochondrion.
32.What is the total number of ATP molecules formed during
cellular respiration?
33.What is the difference in ATP production in an aerobic
environment as opposed to an anaerobic environment?
Why?
34.At the beginning of strenuous exercise, what are the
three sources of ATP available to the body?
35.Energy demands for a short but intense exercise can be
supplied by what process and approximately how long can
that supply be produced?
36.What is “oxygen-debt” as it relates to short but
intense exercise? How is that debt resolved?
37. What are the two types of ATP production? Where do
they occur and how much ATP is produced for each?