Causes of Disease in Humans Essay - 807 Words.
Infection and response - Six-mark questions. Six-mark questions are often the questions that people find the most difficult. In all longer answer questions, but especially the six-mark ones, it is.
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Essay B. The causes of disease in humans Marking guidance Mark Pathogens: 25 Pathogens include bacteria, viruses and fungi Pathogens cause disease by damaging cells and producing toxins Cholera bacteria produce toxins resulting in diarrhoea Symptoms and transmission of pulmonary tuberculosis Horizontal gene transmission and MRSA Lifestyle.
Mark schemes are prepared by the Principal Examiner and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all examiners participate in and is the scheme which was used by them in this examination.
Mark schemes are prepared by the Principal Examiner and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all examiners participate in and is the scheme which was used by them in this examination. The standardisation process ensures.
Microbes and Pathogens. Microbes (an organism too small to be seen by the naked eye) can enter the body through the mouth, nose and cuts or bites in the skin. Microbes (bacteria and viruses) can cause diseases. There are billions of microorganisms inside us and on our skin. Over 95% of those inside us right now are helpful - or at least harmless.
Communicable diseases Pathogens are disease-causing viruses, bacteria, fungi or protists, which can infect animals and plants. Humans have an immune system, which can defend them from pathogens.