What is the ratio of the rate of diffusion of carbon(IV) oxide to that of propane, under the same conditions? [H = 1; C= 12; 0= 16]

What is the ratio of the rate of diffusion of carbon(IV) oxide to that of propane, under the same conditions? [H = 1; C= 12; 0= 16]

  1. 1:1 ✓
  2. 4:1
  3. 2:1
  4. 3:1

Explanation

Cellular respiration releases energy from glucose: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP energy. This is the reverse of photosynthesis. All living cells respire continuously.

Aerobic respiration (with oxygen) produces 36-38 ATP per glucose. Anaerobic respiration (without oxygen) produces only 2 ATP, plus lactic acid (animals) or ethanol (yeast).

Respiration occurs in mitochondria. The energy released (ATP) powers all cell activities – movement, growth, transport, synthesis. Do not confuse cellular respiration with breathing (gas exchange).