B1 0.0 / 5 ? BiologyB1 part 1GCSEOCR Created by: mollymckages094Created on: 16-04-16 20:57 What is the difference between being fit and healthy? Healthy means being free of infections and diseases. Being fit means how well you can perform physical tasks 1 of 8 Explain one way that smoking can increase blood pressure Cigarettes contain carbon monoxide which combines with haemoglobin in the red blood cells. This makes them carry less oxygen. 2 of 8 How do narrow arteries increase the risk of a heart attack? Narrow arteries restrict the amount of blood flow to the heart. This means it receives less oxygen which can cause a heart attack 3 of 8 Explain why plant proteins are classed as "2nd class proteins". Plants do not contain all the essential amino acids 4 of 8 Explain what causes the condition kwashiorkor. Why is it more common in developing countries? Eating too little protein causes kwashiorkor. Common in developing countries because of overpopulation or not enough money 5 of 8 Explain how psychological disorders can cause under-nutrition. Sufferers may experience low self esteem which leads to poor diet. This can lead onto other illnesses such as liver failure and kidney failure 6 of 8 What is a parasite? An organism that lives off another organism known as a "host" 7 of 8 Explain how antibodies destroy pathogens. Antibodies are produced specific to that pathogen. They lock onto them and kill the new invading cells 8 of 8
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