(a)[1]
Red blood cells are specialised cells for carrying oxygen. State the substance inside red blood cells that binds with oxygen.
(b)[1]
State the name of the blood component that helps blood to clot.
(c(i))[3]
Calculate the percentage increase in the mean diameter of red blood cells placed in the 0.8% salt solution. Give your answer to two significant figures.
(c(ii))[3]
Explain the results for the red blood cells that were placed in the 1.8% salt solution.
(c(iii))[1]
State why there was no change in the mean diameter of the red blood cells placed in the 0.9% salt solution.
(d)[1]
State why red blood cells burst when they are immersed in pure water but plant cells do not.
(e)[2]
State two uses of water in a plant.