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Title: GCSE Biology 1.3 - Digestion
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A.) This is one of six topics in the unit.
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A.) This is one of six topics in the unit.
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It has a rich blood supply which maintains a steep diffusion gradient
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Balanced diet
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proteins
carbohydrates
fats
minerals (such as iron, to produce haemoglobin)
vitamins (such as vitamin C, to maintain healthy tissue)
fibre (to provide bulk in the digestive system)
water (as it is essential part of many bodily functions and processes)
Energy content of food eaten
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must be balanced with energy needs as excess energy will be stored as fat by the body,
leading to obesity
Excess sugar
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can lead to obesity, type 2 diabetes and tooth decay
Excess fat
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can lead to obesity, heart disease, circulatory disease
Excess salt (sodium)
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can lead to high blood pressure
Title: GCSE Biology 1.3 - Digestion
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A.) This is one of six topics in the unit.
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A.) This is one of six topics in the unit.