Biology 12
Name:
Blood Chemistry Worksheet
1. Complete the following chart:
Exchange of O2 and CO2 during
Location in the body where it occurs
External respiration
Internal respiration
Cellular respiration
2. Name or give the chemical formula of the following:
Name
Formula
Carbaminohemoglobin
HbO2
Reduced hemoglobin
Bicarbonate ions
H+
Carbonic acid
3. For each of the respiratory reactions, identify where in the body it would occur and
classify each as external or internal respiration. First one is done as an example.
Reaction (write words below formula)
Where it occurs
External or Internal Resp.
Inside the red
Hb + O2 → HbO2
blood cells at
external
alveolar
Hemoglobin + oxygen →
capillaries
oxyhemoglobin
HbO2 → Hb + O2
Hb + CO2 → HbCO2
HbCO2 → Hb + CO2
CO2 + H2O → H2CO3 → HCO3- + H+
HCO3- + H+ → H2CO3 →CO2 + H2O
H+ + Hb → HHb
HHb → H+ + Hb
4. Describe 3 ways that CO2 can be transported.
5. Describe what happens to the pH of the blood as cells of the body increase their rate of
cellular respiration. Describe why this occurs.
6. Describe 3 roles of hemoglobin.
7. As cells increase their rate of cellular respiration, what happens to the amount of
oxygen carried by hemoglobin? Why does this occur?
8. Describe the role of carbonic anhydrase. Where is this enzyme found?
9. Complete the following chart.
Blood component
Relative amount of HbO2
Relative amount of HbCO2
Relative amount of HCO3 Relative amount of HHb
Oxygenated blood
Deoxygenated blood