Edexcel B Exchange and Transport

Welcome to your Edexcel B Biology Exchange and Transport

Which of the following is not a characteristic of a double circulation?
Vessels carrying blood away from the heart.
The mammalian circulatory system is a ___________.
Fine network-like structure containing one-cell thick blood vessels are called
Vessels carrying blood towards the heart.
At which stage in the cardiac cycle do both ventricles and atria get relaxed?
Which of these is not a risk due to the effect of atherosclerosis?
Select the incorrect statement regarding channel proteins.
By what process is a large molecule transported?
Surface area to volume efficiency in gas exchange
Oxygen moves into a cell
Select the incorrect statement regarding the structure of xylem.
The movement of water up through xylem vessels is by _________.
What are the 3 layers of a heart?
a) Endocardium
b) Epicardium
c) Pericardium
d) Myocardium
During oxidative phosphorylation, hydrogen ions join with oxygen to form
ATP molecules are best associated with the
The 'lub' sound of the heart is caused by the closure of which type of valves?
In active transport, the exchange takes place between