haemoglobin as a buffer and the Bohr effect

Question 1

What does a buffer do?

Answer 1

Resist change in the ph

Question 2

What acts as a buffer?

Answer 2

Haemoglobin

Question 3

What is haemoglobin also affected by?

Answer 3

Partial pressure of carbon dioxide

Question 4

What does carbon dioxide dissolve in?

Answer 4

Plasma of red blood cell

Question 5

Where is the carbon dioxide from?

Answer 5

Respiration

Question 6

What is the the 1st reaction with carbon dioxide?

Answer 6

Carbon droxide + water = carbonic acid

Question 7

What is the 2nd reaction?

Answer 7

Carbonic acid →(splits into) hydrogen ions + hydrogen carbonate ion

Question 8

What takes in the hydrogen ion?

Answer 8

Haemoglobin

Question 9

What happens to the haemoglobin when it absorbs the hydrogen ion?

Answer 9

The shape is altered

Question 10

What is the Bohr effect?

Answer 10

Carbon dioxide forces the release of oxygen

Question 11

How does the haemoglabin know how much oxygen to release?

Answer 11

Due to the partial pressure

Question 12

What is affinity controlled by?

Answer 12

• Partial pressure of:
  Oxygen
  Carbon dioxide

Question 13

What does low affinity equal?

Answer 13

Low saturation

Question 14

What does high affinity equal?

Answer 14

High saturation

Question 15

What causes high co2?

Answer 15

High rate of respiration

Question 16

What does high rate of respiration cause?

Answer 16

High oxygen demand

Question 17

What does haemaglebin have if there’s high oxygen demand?

Answer 17

Low affinity