Biology Topic 3 0.0 / 5 ? BiologyMedicine and drugsGCSEAll boards Created by: rhianna304Created on: 17-11-15 13:53 What is a drug? A substance which has a physiological effect when introduced into the body 1 of 20 How do painkillers affect the body? They interfere with the messages to side track the pain 2 of 20 How do hallucinogens affect the body? They alter a persons perception, mood and other mental processes 3 of 20 How do stimulants affect the body? They enhance the effects of chemicals on the brain 4 of 20 How do depressants affect the body? Thy produce a drowsy and calming effect 5 of 20 What is the addictive drug in cigarettes? Nicotine 6 of 20 How does carbon monoxide affect the blood? Prevents the effective carrying of oxygen 7 of 20 Give 3 short term effects of alcohol abuse -Poor memory -Blurred vision -Slowed reaction times 8 of 20 Give 2 long term effects of alcohol abuse -Heart disease -Increased blood pressure 9 of 20 What causes infectious diseases? Pathogenic microorganisms 10 of 20 Which pathogen is spread in water? Cholera 11 of 20 Which pathogen is spread by body fluids? HIV 12 of 20 Which pathogen is spread through the air? Influenza 13 of 20 Name 2 animal vectors Anophelus mosquito and housefly 14 of 20 Name 3 physical barriers Skin, Cilia and Mucus 15 of 20 Name 2 chemical defences in the body Hydrochloric acid in the stomach and lysozymes in tears 16 of 20 Why do plants produce chemicals that antibacterial effects? To defend themselves 17 of 20 Which bacteria could have arisen from the misuse of antibiotics? MRSA 18 of 20 What does independence mean? The dynamic relationship between all living things 19 of 20 What limits the length of a food chain? The transfer of energy to less useful forms at each tropic level 20 of 20
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