Controlling Disease, Health and Disease - Biology - Lecture Slides, Slides of Biology

Download Controlling Disease, Health and Disease - Biology - Lecture Slides and more Slides Biology in PDF only on Docsity! Controlling Disease We are an attractive dish for microbes! Docsity.com Louis Pasteur • People thought that food went off because it was in contact with air. They thought: – Air + food microorganisms grow • Pasteur said that microbes come from microbes • He did som experiments to prove this - Docsity.com Bacteria Drug Resistance • Bacteria in nature are varied. A few have the resistance to antibiotic • When the antibiotic is used there is a natural selection for the bacteria with the most drug resistance. • These survive and breed and become more common Docsity.com Testing for Antibiotic Resistance in Bacteria Clear of bacteria Bacteria colonies growing near disc of antibiotic Discs of different antibiotics Docsity.com Antibiotic Resistance in Bacteria • Many strains of bacteria have resistance to antibiotic due to natural selection • So we need a range of antibiotics to fight disease with the best one for the job • To slow down more antibiotic resistance developing in pathogenic bacteria we need to avoid over using antibiotics Docsity.com