AQA A-level Biology: Mass Transport Quiz

What is the role of haemoglobin in red blood cells?

• Transport of hormones

• Transport of nutrients

• Transport of oxygen

• Transport of carbon dioxide

What effect does the binding of the first oxygen molecules have on haemoglobin?

• Makes the binding of further oxygens harder

• No effect on the binding of further oxygens

• Makes the binding of further oxygens easier

• Causes haemoglobin to release all oxygen molecules

What is the Bohr effect related to?

• The effect of carbon dioxide concentration on the dissociation of oxyhaemoglobin

• The effect of oxygen concentration on the dissociation of oxyhaemoglobin

• The effect of pH level on the dissociation of oxyhaemoglobin

• The effect of temperature on the dissociation of oxyhaemoglobin

Which tissue is responsible for the transport of water in plants?

• Epidermis

• Cortex

• Xylem

• Phloem

What hypothesis explains the mechanism of translocation in plants?

• The capillary action theory

• The root pressure hypothesis

• The cohesion-tension theory

• The mass flow hypothesis