Chapter 7 Mass transport

Question 1

What are haemoglobins?

Answer 1

Group of proteins found in different organisms. Haemoglobin is a protein with quaternary structure. Haemoglobin and red blood cells transport of oxygen.

Question 2

Describe cooperative binding in haemoglobin?

Answer 2

Cooperative nature of oxygen binding to haemoglobin is due to shape of changing shape when oxygen binds. This then makes it easier for further oxygens to bind.

Question 3

Explain the Bohr effect.

Answer 3

When a high CO2 conc causes the oxyhaemoglobin curve to shift to the right.
Affinity for oxygen decreases because acidic carbon dioxide changes shape of haemoglobin slightly.

Question 4

Why does blood flow through the lungs at a lower pressure?

Answer 4

As this prevents damage to the capillaries in the alveoli and also reduces speed at which blood flows enabling more time for gas exchange.

Question 5

Why does blood get pumped at a higher pressure through the rest of the body?

Answer 5

To ensure blood reaches all the respiring cells in the body.

Question 6

Name the blood vessels connected to the heart

Answer 6

Vena cava, aorta, pulmonary artery and pulmonary vein.

Question 7

Name the blood vessels linked to the lungs.

Answer 7

Pulmonary artery and pulmonary vein.

Question 8

Name the blood vessels linked to the kidneys.

Answer 8

Renal artery and renal vein.