Biology Unit 1: Keeping Healthy

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Why do you need a varied diet?
To keep the body healthy
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What is metabolic rate?
The rate of chemical reactions in your cells
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What are pathogens?
Microorganisms such as bacteria and viruses that cause infectious diseases.
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What is bacteria?
Single-celled living organisms.
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How does bacteria cause disease?
They split into two, reproduce and produce toxins, affecting your body. Sometime they can directly damage your cells.
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How do viruses cause disease?
The take over the cells of your body as they reproduce, damaging and destroying cells.
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What are the physical defence mechanisms against pathogens? (Name three)
Skin, Scab, and Mucus
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Name and explain one way a W.B.C protects us from disease.
Ingesting microorganisms
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Other cards in this set

Card 2

Front

What is metabolic rate?

Back

The rate of chemical reactions in your cells

Card 3

Front

What are pathogens?

Back

Preview of the front of card 3

Card 4

Front

What is bacteria?

Back

Preview of the front of card 4

Card 5

Front

How does bacteria cause disease?

Back

Preview of the front of card 5
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