AQA new specification-Viral and bacterial diseases-B5.6-7

I taught bacterial and viral diseases in one lesson so that my students could compare and contrast between the two types. Students enjoyed finding out information online. It also allowed students to access a wealth of information and prompted very interesting discussions. I would recommend booking an ICT suite, i Pads or laptops to make the most out of the independent activity. If computer access is limited the student textbook can also be used :)

This lesson has been created in accordance to the NEW AQA Specification (9-1) for my combined/additional science class (Year 9-KS4). Includes: slide animations, embedded video, worksheets (including support sheet) and answers have also been included within the slides. This resource is suitable for separate science students. If you have a low ability group or would like to incorporate exam questions, i would recommend splitting this lesson in two.

AQA spec link: 4.3.1.2, 4.3.1.3
Relevant chapter: B5-Communicable diseases . AQA Biology third edition textbook-Page 84-87.

*The new specification requires students to know the following; Explain how the spread of diseases can be reduced or prevented.

Viral diseases
Measles is a viral disease showing symptoms of fever and a red skin rash. Measles is a serious illness that can be fatal if complications arise. For this reason most young children are vaccinated against measles. The measles virus is spread by inhalation of droplets from sneezes and coughs.
HIV initially causes a flu-like illness. Unless successfully controlled with antiretroviral drugs the virus attacks the body’s immune cells. Late stage HIV infection, or AIDS, occurs when the body’s immune system becomes so badly damaged it can no longer deal with other infections or cancers. HIV is spread by sexual contact or exchange of body fluids such as blood which occurs when drug users share needles.
Tobacco mosaic virus (TMV) is a widespread plant pathogen affecting many species of plants including tomatoes. It gives a distinctive ‘mosaic’ pattern of discolouration on the leaves which affects the growth of the plant due to lack of
photosynthesis
.
Bacterial diseases
Salmonella food poisoning is spread by bacteria ingested in food, or on food prepared in unhygienic conditions. In the UK, poultry are vaccinated against. Salmonella to control the spread. Fever, abdominal cramps, vomiting, and diarrhoea are caused by the bacteria and the toxins they secrete.
Gonorrhoea is a sexually transmitted disease (STD) with symptoms of a thick yellow or green discharge from the vagina or penis and pain on urinating. It is caused by a bacterium and was easily treated with the antibiotic penicillin until many resistant strains appeared. Gonorrhoea is spread by sexual contact. The spread can be controlled by treatment with antibiotics or the use of a barrier method of contraception such as a condom.