Download Name: #: Cellular Respiration Review 2 Process Where does it

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Cellular Respiration Review 2
Process
Where does it
occur
Aerobic or
Anaerobic
Products (with
amounts)
Reactants
Step 1: Glycolysis
Cytoplasm
Anaerobic
Glucose + 2ATP
4ATP + 2 pyruvate +
2NADH
Step 2 Krebs Cycle
Mitochondrial
matrix
Aerobic
2 pyruvate
(for 2 turns) 6CO2 +
2ATP + 8NADH +
2FADH2
Step 3: ETC
Along inner
membrane of
mitochondria
Aerobic
10 NADH + 2 FADH2
32 ATP
Step 2: Alcoholic
Cytoplasm
Anaerobic
Pyruvate
2 ATP
Cytoplasm
Anaerobic
Pyruvate
2 ATP
Fermentation
Step 2: Lactic Acid
Fermentation
Tell the kind of fermentation used in each example:
1. Yeast use this to make bread dough rise _____Alcoholic___________________
2. Your muscle cells use this during rapid exercise when oxygen is low _____Lactic Acid__________
3. Bacteria and yeast use this to make beer and wine _______Alcoholic______________
4. Bacteria use this to make cheese, yogurt, and sour cream _____Lactic Acid______________
5. If alcoholic fermentation is used to make bread dough rise, how come you don’t become
intoxicated when you eat the bread? The alcohol cooks off when the bread is baked
6. Write the complete overall chemical equation for cellular respiration using chemical symbols
instead of words: 6O2 + C6H12O6  6H2O + 6CO2 + 36ATP
7. Why do we say there is a ‘net’ gain of 2 ATP at the end of glycolysis?
Glycolysis produces 4ATP but since it needs 2 ATP to start, the cell only increases its amount of
ATP by 2
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8. What is oxygen’s role in cellular respiration? Final electron acceptor
9. What happens to oxygen after it is used as the final electron acceptor? It combines with
hydrogen to form water
10. Compare and contrast aerobic and anaerobic processes (be sure to include which makes more
ATP) aerobic processes require oxygen. Anaerobic processes do not. Aerobic processes produce
much more ATP than anaerobic processes.
11. What happens after glycolysis if oxygen is present? Krebs cycle
12. What happens after glycolysis if oxygen is not present? Fermentation
13. What organisms do cellular respiration? All
14. What organisms do lactic acid fermentation? You (in your muscles), bacteria
15. What organisms do alcohol fermentation? Yeast, bacteria