O2 Dissociation Curve

State which cell contains haemoglobin

• Thrombocytes (platelets)

• Erythrocytes (red blood cells)

• Lymphocytes (white blood cells)

• Blood Plasma

Which fact is true about Haemoglobin

• Helps fight infection

• Transports lactic acid

• It is a carbohydrate

• Each molecule has 4 sections

Where do you have high levels of O2 (pick 2)

• blood leaving the lungs

• blood leaving the muscle

• in the lungs/alveoli

• in the veins and venules

What does high affinity mean in relation to haemoglobin

• wants to keep hold of O2 molecules

• wants to collect lots of CO2

• wants to release O2 molecules

• neither collects or releases gas

• not sure

Why is there a low level of oxygen saturation in the muscle?

• because the muscle is relaxed

• so that protein is made

• the muscle has already used up the O2 to make ATP

• so the liver works harder

how many O2 molecules can haemoglobin carry

• 1

• 2

• 3

• 4

When does the curve shift to the right

• when we are relaxed

• when we are sat in an ice bath

• when we are exercising

• when we are eating

There is high affinity in the lungs and low affinity in the muscles

• True

• False

• not sure

When we exercise...

• more O2 is made and there is no acidity

• more CO2 is made and there is no change in acidity

• more CO2 is made and the blood becomes acidic (low pH)

• less CO2 is found in the muscle and we breath in less O2

Which of these causes the Bohr shift to the right?

• low protein

• high O2

• high CO2

• cold environment