BIOLOGY EXAM 3 PRACTICE QUESTIONS AND ANSWERS

BIOLOGY EXAM 3 PRACTICE QUESTIONS AND ANSWERS
1. Give the balanced chemical equation for cellular respiration.
C6H12O6 + 6O2 → 6CO2 + 6H2O (glucose + oxygen -> carbon dioxide + water).
2. What are oxidation and reduction reactions?
Involves a transfer of electrons between two species
Reduction is loss of oxygen atoms
When reduction occurs, an element gains an electron and its oxidation number
decreases
3. Describe the breakdown of glucose via cellular respiration. What is oxidized and
what is reduced in this reaction?
Breakdown of Glucose, Link reaction, Krebs Cycle, Electron Transport Chain Oxidation
is what reduces a substance
pyruvate formed in glycolysis is transported into the mitochondria, where it is
oxidized by O2 to CO2. glucose+6O2->6CO2+6H20+30-32ATP.

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