Gas Exchange + Bohr Effect

Question 1

How can oxygen be transported ?

Answer 1

2 ways :
- within the haemoglobin (Hb) in the red blood cells - oxyhaemaglobin
- within blood plasma (approx 3%) oxygen is stored in small amounts in muscle myoglobin

Question 2

How can carbon dioxide be transported ?

Answer 2

3 ways:
- within haemaglobin (red blood cells) to become carbamino-haemoglobin
-within blood plasma (approx 7%)
- in water (as carbonic acid)

Question 3

What is external respiration ?

Answer 3

It occurs between the alveoli and blood capillaries (lungs)

Question 4

What is internal respiration?

Answer 4

Occurs between the muscle cell membrane and blood capillaries

Question 5

What is gas exchange ?

Answer 5

Blood arriving at the capillaries that surrounded alevoli in the lungs is deoxygenated, as the oxygen has been used by the tissue for respiration and carries waste and co2

Question 6

Gases either side of the alveoli membrane (wall) have different pressures - what does this create

Answer 6

Creating a pressure gradient

Question 7

What is partial pressure

Answer 7

The pressure a gas exerts within a mixture of gases.