Biology Flash Cards 4.0 / 5 based on 2 ratings ? BiologyIGCSEAQA Created by: FernCreated on: 13-05-13 17:07 What is meant by "Balanced Diet"? A diet including all the nutrients we need in the right amounts. 1 of 27 What is meant by "Malnourishment"? When the body lacks one vitamin, mineral or food group. 2 of 27 What medical problems can be caused by obesity? Heart Disease, Type 2 Diabetes, Heart Attacks. 3 of 27 What two ways could someone lose weight? Reduce the amount of fat & sugar in the diet & Exercise more. 4 of 27 What is the metabolic rate? The speed at which chemical reactions occur in the body. 5 of 27 What two factors affect the metabolic rate? Age / Fitness 6 of 27 Why do men need more calories than women? They usually have higher muscle mass. They usually have larger bodies and more strenuous jobs. 7 of 27 How can some one be fit but malnourished. They could exercise to stay fit but have a diet lacking in one vitamin, mineral or food group. 8 of 27 Why do you not become immune to flu? The virus mutates so that the immune system will not recognise it. 9 of 27 What is a pandemic? An out break of disease in multiple countries. 10 of 27 Why do anti-biotics not affect flu? Because it is a virus. 11 of 27 Why do you become ill the first time you come accross a microorganism? Because you have no immunological memory of the cell so your body has no defence against it and needs to make more anti-bodies. 12 of 27 Why do drug companies test on healthy people? Because if there were adverse affects they wouldn't be as dangerous for a healthy person. 13 of 27 What is a drug? A chemical that affects how the body works. 14 of 27 What is a nutrient? A chemical that the body needs to keep it working properly. 15 of 27 What does a stimulant do? Makes you alert and stops you feeling tired. 16 of 27 What does a sedative do? Helps you relax and calm down. 17 of 27 What does a analgesic do? Blocks pain receptors to the brain. 18 of 27 What does a halluciogen do? Makes you see things differently - not as they really are. 19 of 27 Why are some drugs illegal? Dangerous, addictive, long term effects and change behavior. 20 of 27 What withdrawl symptoms might someone suffer? Nausea, cravings, irritability, shaking and sweating. 21 of 27 What groups of microbes cause disease? Viruses and Bacteria. 22 of 27 What are the substances made by white blood cells to kill pathogens? Antitoxins. 23 of 27 What are the substances made by white blood cells to counteract poisons produced by pathogens? Antibodies. 24 of 27 What do steroids do? Make muscles grow bigger. 25 of 27 What do stimulants do? Make you feel alert / mask fatuige. 26 of 27 Why are some drug trial volunteers given a placebo? To make sure the effects of the drug are physical, not made-up by volunteers. 27 of 27
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