1) What is the symbol which we use for haemoglobin? a) H b) Hb c) HB d) Bh 2) Haemoglobin is a protein with a... a) Primary structure b) Secondary structure c) Tertiary structure d) Quaternary structure 3) How many polypeptide chains are there in one haemoglobin molecule? a) 1 b) 2 c) 4 d) 8 4) The haem group in haemoglobin is made out of ... a) Sodium b) Potassium c) Glycogen d) Iron e) Magnesium 5) High affinity for oxygen means.... a) Will readily bind with oxygen b) Is unlikely to bind with oxygen 6) How many O2 molecules can one haemoglobin molecule? a) 2 b) 4 c) 8 d) 16 7) Hb + O2 ---> HbO8 How many O2 molecules when balanced? a) 1 b) 2 c) 3 d) 4 8) Hb + 4O2 ---> HbO? a) 1 b) 2 c) 4 d) 8 9) Oxygen dissossociation means? a) O2 binds with Hb b) CO2 binds with Hb c) Oxyhaemoglobin --> Hb + O2 d) Oxyhaemoglobin --> Hb + CO2 10) The concentration of O2 in the lungs or the respiring tissues is called the ... a) O2 conc b) Partial concentration c) Partial pressure 11) The symbol for the partial pressure of O2 is... a) PPO2 b) PO2 c) pO2 12) If there is a higher pO2 in the lungs then a) O2 will load onto haemoglobin b) O2 will dissociate from haemoglobin 13) Oxyhaemoglobin unloads (dissociates from O2) at.. a) Low pO2 b) High pCO2 c) Both 14) Respiration a) Lowers the pO2 in cells b) Raises the pO2 in cells c) Raises the pCO2 in cells d) Raises the pCO2 in the blood e) 1, 3 & 4 15) O2 dissociation occurs in the... a) Ateries b) Arterioles c) Capillaries d) Veins 16) When there are high levels of CO2 dissolved in the blood... a) This raises the pH b) This lowers the pH

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