10.1 Haemoglobin

Question 1

The role of haemoglobin?

Answer 1

To transport oxygen.

Question 2

Two ways which haemoglobin is efficient to transport oxygen?

Answer 2

• Readily associate with oxygen at the surface where gas exchange takes place
• Readily dissociate from oxygen at those tissues requiring it.

Question 3

At the region of body of GAS EXCHANGE SURFACE, is; oxygen concentration, carbon dioxide concentration, and affinity of haemoglobin for oxygen, will the affinity be high or low?

Answer 3

• Oxygen concentration =high
• Carbon dioxide concentration = low
• Affinity of haemoglobin for oxygen = high

Question 4

At the region of body of RESPIRING TISSUES, is; oxygen concentration, carbon dioxide concentration, and affinity of haemoglobin for oxygen, will the affinity be high or low?

Answer 4

• Oxygen concentration =low
• Carbon dioxide concentration = high
• Affinity of haemoglobin for oxygen = low

Question 5

Haemoglobins with a HIGH affinity for oxygen, do they take up oxygen easily or not? do they release it readily or not?

Answer 5

• Take up oxygen easily

- Release it less readiy

Question 6

Haemoglobins with a LOW affinity for oxygen, do they take up oxygen easily or not? do they release it easily or not?

Answer 6

• Take up oxygen less easily

- Release it more readily

Question 7

What is the process by which haemoglobin combines with oxygen called?

Answer 7

Loading (associating), this places in the lungs.

Question 8

What is the process by which haemoglobin releases its oxygen called?

Answer 8

Unloading (dissociating), this takes place in the tissues.