GCSE AQA Biology Smoking Smoking and Health topic 3.5 / 5 based on 6 ratings ? BiologyGCSEAll boards Created by: LeahCreated on: 24-02-11 16:30 What is the addictive drug in a tobacco cigarette? Nicotine 1 of 9 Why do people get addicted to smoking? It makes them feel relaxed but they gradually need more and more cigarettes to get the same affect 2 of 9 Why do smokers cough a lot? Little hairs which move mucus away from your lungs stop working because of all the bad chemicals inhaled through smoking so mucus sits on the lungs 3 of 9 What chemical in cigarettes turns your lungs from pink to grey? Tar 4 of 9 Why is emphysema common amongst smokers? The build up of tar 5 of 9 What is emphysema? When the delicate air sacs in the lungs break down 6 of 9 Tar is a majojr carcinogen. What is meant by the term carcinogen? A cancer causing substance 7 of 9 Why do smokers often get breathless? After one cigarette up to 10% of a smoker's blood will be carbon monoxide rather than oxygen 8 of 9 Why is smoking especially bad amongst pregnant women? Their baby wll be deprived as oxygen and may not grow as well as it should 9 of 9
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