(a(i))[2]
Place ticks (✓) in Table 7.1 to indicate the characteristics of each pathogen.
(a(ii))[3]
Describe the ways in which HIV affects the human immune system.
(a(iii))[2]
HIV and MRSA are not killed by antibiotics such as penicillin, but for different reasons. Give these reasons. HIV [BLANK]. MRSA [BLANK].
(b)[3]
Fig. 7.1 shows how many people in different countries are infected by the MRSA pathogen. It also gives the total amount of antibiotics used in each country in one year per 1000 people. The countries shown are South Korea, Spain, United States, Canada, Great Britain, Germany, Netherlands. Describe and explain the relationship between antibiotic use and the number of people infected by the MRSA pathogen.