Question

c₆h₁₂o₆ + 6o₂ → 6co₂ + 6h₂o + ~40 atp

• where did the glucose come from?
• where did the o₂ come from?
• where did the co₂ come from?
• where did the co₂ go?
• where did the h₂o come from?
• where did the atp come from?
• what else is produced that is not listed in this equation?
• why do we breathe?

Explanation:

• Glucose comes from the digestion of carbohydrates in food or from glycogen breakdown in the body.
• Oxygen comes from the air we breathe, taken in through respiration.
• Carbon - dioxide is a product of cellular respiration, specifically from the breakdown of glucose.
• Carbon - dioxide is transported in the blood to the lungs and exhaled out of the body.
• Water is a by - product of the electron transport chain in cellular respiration, where hydrogen combines with oxygen.
• ATP is produced through a series of reactions in cellular respiration, including glycolysis, the Krebs cycle, and oxidative phosphorylation.
• Heat is also produced during cellular respiration but not listed in the equation.
• We breathe to take in oxygen, which is necessary for cellular respiration to produce ATP, and to expel carbon - dioxide, a waste product of cellular respiration.

Answer:

• Glucose: Digestion of carbohydrates or glycogen breakdown.
• O₂: Inhaled air.
• CO₂: Breakdown of glucose in cellular respiration.
• CO₂ destination: Exhaled from lungs.
• H₂O: Electron transport chain in cellular respiration.
• ATP: Glycolysis, Krebs cycle, oxidative phosphorylation.
• Unlisted product: Heat.
• Reason for breathing: To supply O₂ for cellular respiration and remove CO₂ waste.