GCSE A* REVISION NOTES


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B1.1: Keep Healthy

B1.1.1: Diet and Exercise

Nutrient

Function in the body

Carbohydrates

Provides Energy

Fats

Keeps you warm and provides energy

Proteins

For growth and cell repair/replacement

Vitamins

These are needed to create vital biological molecules

Minerals

These are needed to create vital biological molecules

Fibre

These are used to line the digestive tract

Water

This is to keep you hydrated

 B1.1.2: Infectious Disease

Vaccines

Advantages
Disadvantages

B1.1: Keep Healthy

B1.1.1: Diet and Exercise

Nutrient

Function in the body

Carbohydrates

Provides Energy

Fats

Keeps you warm and provides energy

Proteins

For growth and cell repair/replacement

Vitamins

These are needed to create vital biological molecules

Minerals

These are needed to create vital biological molecules

Fibre

These are used to line the digestive tract

Water

This is to keep you hydrated

 B1.1.2: Infectious Disease

Vaccines

Advantages
Disadvantages

Antibiotic Resistant Bacteria       

Bacteria can randomly mutate and become more resistant to the anti-biotic. This means that if you have an infection and treat it with anti-biotic but stop when you feel better, you will have only killed the less resistant bacterium. The more resistant bacteria will still be alive. This gives it an advantage so by natural selection the resistant bacteria reproduce and pass on their resistant gene this means that you end up with a whole colony of more resistant bacteria.


 

Antibiotic Resistant Bacteria       

Bacteria can randomly mutate and become more resistant to the anti-biotic. This means that if you have an infection and treat it with anti-biotic but stop when you feel better, you will have only killed the less resistant bacterium. The more resistant bacteria will still be alive. This gives it an advantage so by natural selection the resistant bacteria reproduce and pass on their resistant gene this means that you end up with a whole colony of more resistant bacteria.


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