Biology - B3 Notes

Types of Diseases

• Bacteria rapidly reproduce and produce toxins which damage cells
• Tobacco mosaic virus causes mosaic patterns on leaves. This causes them to become discoloured, meaning photosynthesis can't be carried out well
• Mosquitos are involved in the spread of malaria because they are a vector. They feed on and infect people to pass it on
• The symptoms of gonorrhea are: pain during urination and a thick yellow or green discharge
• Destroying vectors can help to prevent the spread of disease because…