(a)[2]
Complete the definition of transmissible disease. A transmissible disease is a disease in which the [BLANK] can be transferred from one [BLANK] to another.
(b(i))[1]
State the name of the disease with the smallest number of infections in Fig. 7.1.
(b(ii))[1]
Use the information in Fig. 7.1 to work out the combined number of people infected with these four diseases.
(b(iii))[1]
State the type of organism that brings about cholera.
(c(i))[2]
Complete Table 7.1 so that it shows which examples are direct contact and which are indirect contact.
(c(ii))[3]
Put ticks (✓) in the boxes to indicate the correct defence mechanism for each example.