(a(i))[1]
Fig. 4.1 is a transmission electron micrograph of the form of $T.\,brucei$ found in human blood. Place an arrow on Fig. 4.1 to show the part of the cell where ribosomal RNA (rRNA) and proteins are assembled to form ribosomal subunits.
(a(ii))[2]
With reference to Fig. 4.1, explain how the structure labelled X gives evidence that $T.\,brucei$ is motile (able to move).
(a(iii))[3]
With reference to Fig. 4.1, explain whether $T.\ brucei$ is a eukaryote or prokaryote.
(b(i))[1]
State the term given to an organism that causes disease.
(b(ii))[1]
Name one Plasmodium species that causes malaria.
(c)[3]
Outline the similarities and differences between the transmission of malaria and sleeping sickness.