WorksheetsOxygen Dissociation Curve (1)
Total questions: 10
Worksheet time: 10mins
With reference to the graph, which of the areas represent the percentage saturation in a resting muscle tissue?
A and C
A alone
B and C
B alone
Which of the following is true about percentage saturation of blood in region C
That is the percentage saturation of blood that is entering the lungs
That is the percentage saturation of blood leaving the lungs
That is the percentage saturation of the alveolar air space
That is the percentage saturation of the plasma
Using the graph, what does graph A represent?
graph of fetal haemoglobin
graph of sickle celled haemoglobin
graph of adult haemoglobin
graph of denatured haemoglobin
Which statement truly represents the difference between the two curves?
Curve A represents an haemoglobin that has higher affinity for oxygen at all partial pressures of oxygen
Curve A represents a curve that has higher affinity for haemobloby at only at low partial pressures of oxygen
Curve A represents haemoglobin that will readily release oxygen at all partial pressures
Curve A represents haemoglobin that will not readily bind to oxygen even at high partial pressure of oxygen
Which of the following statements is true from the curve?
any decrease in partial pressure will always cause curve A's haemoglobin to release more oxygen
any decrease in partial pressure will always cause curve B's haemoglobin to release more oxygen
any decrease in partial pressure will only cause curve A's haemoglobin to release more oxygen at low partial pressures of oxygen
any decrease in partial pressure will only cause curve A's haemoglobin to release more oxygen at high partial pressures of oxygen
At which range of partial pressure will both haemoglobin have the same percentage saturation?
90mmHg - 100mmHg
60mmHg - 100mmHg
60mmHg - 100 mmHg
80mmHg - 100mmHg
Using the graph, which of the following is true about myoglobin?
it is proteinous in nature
it does not readily release its oxygen until partial pressure of oxygen starts falling below 40mmHg
it only releases it's oxygen when haemoglobin has released all its oxygen
compared to adult haemoglobin, it releases more oxygen when partial pressure reduces from 60mmHg to 30mmHg
Under which range of partial pressure decrease will myoglobin release more oxygen than adult hemoglobin?
decrease from 15mmHg to 5mmHg
decrease from 40mmHg to 20mmHg
decrease from 80mmHg to 20mmHg
decrease from 100mmHg to 20mmHg
At partial pressure of 20mmHg, ………………………
Adult haemoglobin has a higher affinity for oxygen than myoglobin
Adult haemoglobin is less saturated with oxygen compared to myoglobin
Adult haemoglobin is completely deoxygenated while myoglobin is not
Adult haemoglobin still has capacity to release a large amount of oxygen compared to myoglobin
