Biology B1 1.5 Defence mechanisms. 0.0 / 5 ? BiologyMicrobes and diseaseGCSEAQA Created by: Atlanta and JacobCreated on: 07-04-16 16:12 What does the body prevent from getting in? Pathogens. 1 of 10 How does the body defend against pathogens that enter? Pathogens can be destroyed by white blood cells, pathogens are also trapped by mucus and killed by stomach acid. 2 of 10 What are white blood cells part of? The immune system. 3 of 10 What are the three ways that white blood cells defend the body against pathogens? They ingest pathogens, they produce antibodies and they produce antitoxins. 4 of 10 What does white blood cells ingest pathogens mean? This means they digest and destroy them. 5 of 10 How does the antibodies produced by white blood cells defend the body against pathogens? They help to destroy particular pathogens. 6 of 10 How do the antitoxins produced by white blood cells defend the body? They counteract the toxins (poisons) that pathogens produce. 7 of 10 How are pathogens prevented from entering the body? The skin stops them (also mucus and stomach acid). 8 of 10 How do white blood cells defend the body? They ingest pathogens, produce antibodies and produce antitoxins. 9 of 10 ***LOOK UP DIAGRAM OF WHITE BLOOD CELLS DEFENDING THE BODY**** **INGESTING BACTERIA, MAKING ANTIBODIES AND MAKING ANTITOXINS**** 10 of 10
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