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Biology-Science

Keeping healthy Diet and exercise, defending against infection Nerves and hormon

QuestionAnswer
1. What is 'the metabolic rate'? The speed at which chemical reactions take place in our bodies
2. After exercise is- the metabolic rate stays permanently high? the metabolic rate stays permanently low? the metabolic rate stays high for a while? the metabolic rate stays high for a while!
3. What is a feature of low-density lipoproteins (LDLs)? LDLs carry cholesterol from the liver to the cells of the body
4. What is it best to have for a healthy heart? A high proportion of HDL compared to LDL
1. What is a 'pathogen'? A disease-causing microorganism
2. Which of these is one of the main problems with bacteria? The main problem with bacteria is they produce toxins.
3. Which of these is one of the main problems with viruses? The main problem with viruses is they damage the host cell when they reproduce.
4. What is one of the functions of white blood cells? One of the functions of white blood cells is to ingest and destroy pathogens.
5. What is a function of antibodies? A function of antibodies is to lock on to antigens.
6. How do antibiotics work? Antibiotics work by stopping bacteria from reproducing.
7. What can vaccination involve? Vaccination can involve injecting an inactive form of the pathogen to stimulate immunity.
8. 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.
Created by: 100000075324615
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