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AQA AS level biology questions and answers already passed
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AQA AS level biology questions and answers already passed What are the three ways a pathogen can damage hosts cells? ✔✔1) rupturing them to release nutrients inside them 2) breaking down nutri... ents inside the cell for their own use. This starves and eventually kills the cell. 3) replicating inside the cells and bursting them when they're released What are the two ways pathogens cause disease? ✔✔1) production of toxins 2) cell damage What are the lifestyle factors that can affect your chances of getting cancer? ✔✔1) smoking 2) excessive exposure to sunlight 3) excessive alcohol intake What are the three surfaces of contact- where pathogens enter our body? and how do they get in? ✔✔1) gas-exchange system = if you breathe in air that contains pathogens, most of them will be trapped in mucus lining the lung epithelium. Some pathogens are able to reach the alveoli where they can invade cells and cause damage. 2) Skin = if you damage your skin, pathogen [Show More]
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AQA A-Level Biology Bundled Exams Questions and Answers with Verified Solutions
AQA A-Level Biology Bundled Exams Questions and Answers with Verified Solutions
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