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Which process is more efficient at producing ATP during cellular respiration?
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8. Respiration
Introduction to Aerobic Cellular Respiration
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How many molecules of oxygen are required for the complete aerobic respiration of one molecule of glucose?
A
2 molecules
B
6 molecules
C
1 molecule
D
12 molecules
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Understand the process of aerobic respiration: It involves the complete oxidation of glucose (C₆H₁₂O₆) in the presence of oxygen (O₂) to produce carbon dioxide (CO₂), water (H₂O), and energy in the form of ATP.
Write the balanced chemical equation for the aerobic respiration of glucose: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O.
Identify the stoichiometry of the reaction: From the balanced equation, one molecule of glucose reacts with six molecules of oxygen.
Recognize that the coefficients in the balanced equation represent the molar ratio of reactants and products. Here, the ratio is 1:6 for glucose to oxygen.
Conclude that for the complete aerobic respiration of one molecule of glucose, six molecules of oxygen are required.
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