Explain how partial pressure of oxygen affects how oxygen binds to haemoglobin in different areas of the body.
In the lungs, the partial pressure of oxygen is high therefore haemoglobin readily binds to the oxygen. This causes the haemoglobin to undergo a conformational change and increase its affinity for oxygen so that more oxygen can bind to the haemoglobin. In respiring cells the partial pressure of oxygen is low and haemoglobin readily dissociates the oxygen so that it can be delivered to the working tissues.
VA
Related Biology A Level answers
All answers ▸Putting bee honey on a cut kills bacteria. Honey contains a high concentration of sugar. Use your knowledge of water potential to suggest how putting honey on a cut kills bacteria. (AQA BIOL1)
What are the characteristic properties of the genetic code?
What is a neuron and its function?
Explain how smooth muscle in the arterioles can reduce blood flow.