Question

Which of the following factors affect the oxygen dissociation curve?

• A. Partial pressure of carbon dioxide
• B. $pH$ ($H^{+}$ ion concentration)
• C. Temperature
• D. Partial pressure of oxygen
• E. All of the above

Answer 1

Answer: (E)

All of the above

The sigmoid curve graph plot the relation between the saturation percentage of haemoglobin with oxygen plotted against the partial pressure of carbon dioxide.

Some factors affect these graph. These include:-

• The partial pressure of carbon dioxide.
• Increase and decrease in hydrogen ion level (pH).
• Temperature.
• The partial pressure of oxygen.

All these factors shift the graph to right and left according to their nature.

So the correct option is 'All of the above'