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21 Cards in this Set
- Front
- Back
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What is metabolism?
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The chemical reactions that take place in cells.
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What is metabolic rate?
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The speed at which the chemical reactions that take place in cells proceed.
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Why does exercise increase the body's need for energy?
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Exercise involves movement. Movement occurs when muscles contract and muscle contraction needs energy.
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Why does having more muscle and less fat lead to a higher metabolic rate?
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Fat cells that store fat are inactive and use little energy. Muscle cells are much more active and need alot more energy provided by respiration.
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What is a balanced diet?
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it contains the right amount of different foods and the right amount of energy to maintain good health.
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Why do we eat carbohydrate?
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For energy
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Why do we eat fats?
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For energy
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Why do we eat protein?
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to build cells and repair tissue
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Why do we eat mineral ions and vitamins?
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needed in small amounts to keep the body functioning healthily.
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What is a deficiency disease?
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A disease caused by a lack of an essential vitamin or mineral in the diet.
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Where does cholesterol in your blood come from?
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Two sources
1. directly from some animal products eg eggs 2. The liver makes it from saturated fat that is eaten. |
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What health issue can too much cholesterol cause?
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Heart disease
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What is a statin?
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A drug taken to reduce cholesterol in the blood?
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What is a microorganism that causes an infectious disease called?
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A pathogen
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Who was the doctor who realised that washing hands could help prevent the spread of disease?
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Ignaz Semmelweiss
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How do bacterial pathogens make us ill?
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The reproduce rapidly and produce toxins that have harmful effects on cells.
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What is an analgesic?
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A drug taken to relieve pain eg paracetamol
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What is an antibiotic?
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A drug taken to cure diseases caused by bacteria?
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Why will using antibiotics not cure the flu?
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The flu is caused by a virus. Viruses are not affected by antibiotics?
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How do bacteria become resistant to antibiotics?
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Mutation followed by natural selection.
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What antibiotic resistant bacterium causes a large number of infections in hospitals each year?
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MRSA
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