Biology 1

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  • Created by: allabyre
  • Created on: 04-04-14 17:18
What do we mean by a 'Balanced diet'?
A balanced diet contains the correct amounts of all the nutrients needed for healthy functions of the body.
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Give three reasons to explain why a person may be malnourished
They eat too much. They don't eat enough. Particular nutrients are missing from the diet.
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Give three factors that affects how much energy a person needs
How much exercise they do. Their gender. Size of the person
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What is meant by metabolic rate and what factors affect the rate?
It is how quickly your energy is released by chemical reactions. Exercise, inherited fcators and proportion of fat to muscle.
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What is a pathogen?
An organism that causes disease
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What is a antibiotic?
A drug that kills bacteria
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Why is it difficult to produce medicines to destroy viruses?
Viruses reproduce inside of body cells. The medicine could damage the cells in the process.
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How are the ideas of Semmelweiss used in modern hospitals?
Everyone in hospital must wash their hands after treating a patient to prevent the transfer of pathogens.
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What is meant by a mutation of a pathogen
A change in the genes
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How is a pandemic different from an epidemic
An epidemic is within one country a pandemic is when the virus spreads throughout different countries.
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Why dont doctors give antibiotics for mild throat infections?
Throat infections usually pass by quickly without antibiotics . Overuse of antibiotics result in thr development of antibiotic resistant materials.
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Explain how bacteria develop antibiotic resistance.
Some bacteria mutate and become resistant. Antibiotics kill the non-resistant strains .The resistant strains multiply. Every time the antibiotic is used more resistant strains produce meaning that soon it will consist of purely resistant strains
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How does a person develop immunity following vaccination?
Whit blood cells react to the vaccine by making antibodies. If the body becomes infected the white blood cells will react quickly producing the correct antibodies.
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Other cards in this set

Card 2

Front

Give three reasons to explain why a person may be malnourished

Back

They eat too much. They don't eat enough. Particular nutrients are missing from the diet.

Card 3

Front

Give three factors that affects how much energy a person needs

Back

Preview of the front of card 3

Card 4

Front

What is meant by metabolic rate and what factors affect the rate?

Back

Preview of the front of card 4

Card 5

Front

What is a pathogen?

Back

Preview of the front of card 5
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