The Working Cell Part II Worksheet
1. Study the diagram below. Label the processes using the following terms:
Oxidative Respiration, Lactic Acid Fermentation, Glycolysis, Alcoholic Fermentation, Krebs cycle and ETC
3. Write the number of ATP molecules produced by each process listed below. Then add up these numbers to get the
total number of ATP molecules produced when one glucose molecule is broken down by cellular respiration.
4(2) ATP made in Glycolysis + 2 ATP made in Krebs cycle + 32 ATP made in the Electron Transport Chain
= 36 ATP total for the breakdown of one glucose molecule during cellular respiration.
4. Aerobic means with the use of oxygen whereas anaerobic means without the use of oxygen.
5. Fill in the data table
Aerobic or
Anaerobic
Reactants
Process
Where does it occur
Step 1: Glycolysis
Step 2 Oxidative
Resp: Krebs Cycle
Step2: Oxidative
Resp: ETC
Step 2: Alcoholic
Fermentation
Step 2: Lactic Acid
Fermentation
Cytoplasm (Cytsol)
Mitochondria
Matirx
Inner membrane of
the Mitochondria
Anaerobic
Glucose + ATP
Aerobic
Cytoplasm (Cytsol)
Anaerobic
Cytoplasm
Anaerobic
Pyruvic Acid + ATP
NADH, FADH2,
Oxygen
C6H12O6 + 2ATP
Pyruvic Acid + ATP
C6H12O6 + 2ATP
Pyruvic Acid + ATP
Aerobic
Products
ATP, NADH &
Pyruvic Acid
ATP, NADH, FADH2
and Carbon Dioxide
ATP & H20
Alcohol, CO2
Lactic Acid, CO2
6. Most eukaryotic cells produce about 36 ATP molecules per glucose molecule.
7. What is the process by which glucose is converted into pyruvic acid? Glycolysis
8. At the beginning of oxidative respiration, pyruvic acid reacts with oxygen to form a molecule known as Acetyl CoA.
9. With every turn of the Krebs Cycle, how many ATP Molecules are made? 2, so each glucose produces 2 ATP’s in the
Krebs Cycle.
10. What is the primary waste product of the Krebs Cycle? CO2. What happens to this product? _you exhale it.
11. When pyruvic acid is converted into carbon dioxide and ethanol (alcohol), the process is called Alcoholic
fermentation.
12. The electron transport chain is driven by two products of the Krebs Cycle – NADH and FADH2.
13. Write the balanced chemical equation for cellular respiration. Label “reactants” and “products”.
(reactants) C6H12O6 + 6O2
(products) 6CO2 + 6H2O + ATP (useable energy).
14. What do the molecules NADH and FADH2 transfer to the ETC? Electrons
15. What is the main purpose of the ETC? Production of ATP’s (oxidative phosporytation)
16. Why is the oxygen important to the ETC? O2 pulls in Pyruvic Acid into the mitochondria, helps the breakdown of
pyruvic acid and helps produce ATP’s.
17. Write the equation for photosynthesis. Label each side of the equation as “reactants” and “products”.
(reactants) 6CO2 + 6H2O + light energy
(products) C6H12O6 + 6CO2
18. What is the relationship between photosynthesis and cellular respiration? The products of Cell resp. are the
reactants of photosynthesis. The products of photosynthesis are the reactants of cellular resp.
19. What organism use alcoholic fermentation? Yeast
20. What type of fermentation do human muscle cells go through when exercising rapidly? Lactic Acid Fermentation
Match the following terms with their meaning or purpose. Items can be used more than once.
G
L
K
M
N
M
E
D
A
K
J
F
H
B
G
C
I
G
E
I
F
G
21. Molecule that stores and transports energy in the cell
22. C6H12O6
23. C3H6O3 (1/2 a glucose molecule)
24. CO2
25. gas that is the product of photosynthesis and is a reactant in cellular respiration
26. gas that is produced as a waste product of cellular respiration and a reactant in photosynthesis
27. organelle where cellular respiration occurs
28. organelle where photosynthesis occurs
29. location in cell where glycolysis and fermentation takes place
30. glucose is broken down into two molecules called ___ ___ in the process called glycolysis
31. green pigment in plants that absorbs light energy for plants to use
32. uncharged battery
33. term describing a process that requires oxygen to happen.
34. term describing a process happens only in the absence of oxygen.
35. has three phosphate groups.
36. organisms such as plants that can make their own food.
37. organisms like animals that can not make their own food, they must consume food to get energy.
38. adenosine triphosphate.
39. organelle where the energy in food is handed over ATP.
40. mushrooms are classified as ___, because they live off of dead or decaying organisms to get energy
41. has only two phosphate groups (has less energy).
42. charged battery.