M2 Science Revision Worksheet 2

Smoking causes a person's heart rate to _. slow increase stay the same slow down, then increase Complete the following sentence, "Passive smoking is the breathing in of other people's smoke and it _". only affects the person smoking can make the person who is not smoking become addicted to smoking can cause health problems for other people that breathe it in does not affect the health of those people breathing it in Smoking is the biggest cause of which type of cancer? liver cancer lung cancer skin cancer brain cancer Smoking causes which part of the body to thicken? The lungs The heart The blood The skin The chemical tar that is found in cigarettes is also found in _. roads bicycle tires pencils plastic bags Cigarette smoke contains carbon monoxide and nicotine. Carbon monoxide reduces the amount of oxygen which the blood can carry. Nicotine is addictive.Explain why pregnant women are advised not to smoke. Malaria is a disease caused by a parasite. The parasite is several times bigger than a bacterium.The malaria parasite infects red blood cells and destroys them. The function of red blood cells is to carry oxygen around the body.If a pregnant woman has malaria, explain how this could harm her foetus.