Keeping Healthy 0.0 / 5 ? BiologyKeeping HealthyGCSEAQA Created by: Sam EvansCreated on: 12-05-14 20:57 What do we mean by a 'balanced diet'? The correct amounts of nutrients for healthy functioning of the body 1 of 13 Give three reasons why a person may be malnourished Too much energy, too little food, missing nutrients 2 of 13 Give three factors that affect how much energy a person needs Size of person, sex and amount of exercise they do 3 of 13 What is meant by metabolic rate? How quickly chemical reactions in cells release energy. 4 of 13 What is a pathogen? An organism that causes disease 5 of 13 What is an antibiotic? A drug that kills bacteria 6 of 13 Why is it difficult to produce medicines to destroy viruses? Because viruses reproduce inside cells. Treatment may cause damage to the cells 7 of 13 How are the ideas of semmelweiss used in modern hospitals? Washing hands prevents pathogens from passing on to other patients 8 of 13 What is meant by a mutation of a pathogen? A change in a gene 9 of 13 How is a pandemic different to an epidemic? An epidemic is a disease that spreads within a country and a pandemic is throughout many countries 10 of 13 Why don't doctors give antibiotics for mild throat infections? BEcause the bacteria will become resistant to the antibiotics 11 of 13 Explain how bacteria develop antibiotic resistance? The bacteria mutate and become resistant to the antibiotic. The antibiotic kills the non - resistant strain making it more resistant each time 12 of 13 How does a person develop immunity following vaccination? The white blood cells react by producing antibodies. When the body becomes infected it will produce more antibodies 13 of 13
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