# 1pilihanIn which condition can oxyhaemoglobin easily dissociate?Low pHLow carbon dioxide concentrationLow hydrogen ion concentrationHigh concentration content
# 2pilihanWhich factor most significantly increases the breathing rate in mammals?Reduction of oxygen concentration in the bloodIncrease of carbon dioxide concentration in the bloodReduction of oxygen in the alveolusIncrease of carbon dioxide in the alveolus
# 3pilihanWhich process in the erythrocytes is catalyzed by carbonic anhydrase?Formation of haemoglobinic acidsFormation of carbonic acid from water and CO2Formation of carbaminohaemoglobinFormation of oxyhaemoglobin
# 4pilihanWhat is the definition of the cardiac cycle?The contraction of the atriaThe sequence of events during one heartbeatThe contraction and relaxation of the ventriclesThe circulation of blood in the heart during one heartbeat