求 呼吸作用 的 化學方程式。

Transport of oxygen:
haemoglobin + oxygen ⇔ oxyhaemoglobin
Hb + O2 ⇔ HbO2 (chemical representation, not actually)
Haemoglobin in red blood cell carry oxygen to the whole body by reacting with oxygen to form oxyhaemoglobin in alveoli. When it reach the cells, the oxyhaemoglobin will decompose to give oxygen again, haemoglobin can then be reused.

Transport of carbon dioxide
CO2 + H2O ⇔ H+ + HCO3-
CO2 diffuses into the blood and reacts with the water inside red blood cell to form HCO3- which is soluble. Then the HCO3- will dissolve in plasma and flow to lungs. In alveoli, the HCO3- decomposed to give CO2 again, and CO2 diffuse to the alveoli and exhaled.

2007-04-24 13:31:12 補充：
the equations above are the equations about how oxygen and carbon dioxide are transported inside the body while respiration (gas exchange)

2007-04-24 13:31:47 補充：
if you need the equations of aerobic and anaerobic respirations, here are:

2007-04-24 13:32:07 補充：
aerobic respiration:glucose oxygen → carbon dioxide water energyC6H12O6 6O2 → 6CO2 6H2O energyanaerobic respiration:1. glucose → ethanol carbon dioxide energy(in ATP)C6H12O6 → 2C2H5OH 2CO2 energy2. glucose → lactic acid energy(in ATP)C6H12O6 → 2C3H6O3 energy

2007-04-24 13:32:16 補充：
PS. all reaction above need enzyme

有氧呼吸:C6H12O6 +6O2 → 6CO2 +6H2O+ 能量
人的無氧呼吸:C6H12O6 → 2C3H6O3 + 能量
植物的無氧呼吸:C6H12O6 → 2C2H5OH + 2CO2 + 能量

它們也要有酶作催化劑~