b1 chapter 1 0.0 / 5 ? Biologyb1 revision on dietGCSEAQA Created by: jen123456Created on: 14-04-16 15:01 What is 'the metabolic rate'? The speed at which chemical reactions take place in our bodies 1 of 11 after exercise: the metabolic rate stays high for a while 2 of 11 What is a feature of low-density lipoproteins (LDLs)? A feature of LDLs is they carry cholesterol from the liver to the cells of the body. 3 of 11 What is it best to have for a healthy heart? It is best to have a high proportion of HDL compared to LDL for a healthy heart. 4 of 11 What is a 'pathogen'? A disease-causing microorganism 5 of 11 Which of these is one of the main problems with bacteria? They produce toxins 6 of 11 Which of these is one of the main problems with viruses? They damage the host cell when they reproduce 7 of 11 What is one of the functions of white blood cells? White blood cells ingest and destroy pathogens 8 of 11 How do antibiotics work? Antibiotics work by stopping bacteria from reproducing. 9 of 11 What can vaccination involve? Vaccination can involve injecting an inactive form of the pathogen to stimulate immunity. 10 of 11 It is important to use antibiotics carefully because: We should be careful not to over-use antibiotics because dangerous strains of resistant bacteria may develop by natural selection. 11 of 11
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