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Year 7 KO A2a
Knowledge Organiser Key term Autumn 2 Digestion
Term | Definition |
---|---|
Balanced Diet | Eating food containing the right nutrients in the correct amounts. |
Bile | Substance that breaks fat into small droplets. |
Carbohydrase | Enzyme that breaks down carbohydrates into sugar molecules. |
Carbohydrates | Nutrients that provide the body’s main source of energy. There are two types; simple (sugars) and complex (starch). |
Deficiency | A lack of minerals that causes poor growth. |
Dietary fibre | Parts of plants and animals that cannot be digestion. It helps the body to eliminate waste by providing bulk to keep food moving through the digestive system. |
Digestion | Process in which large molecules are broken down into small molecules. |
Digestive system | Group of organs that work together to break down food. |
Enzymes | Substances that speed up the chemical reactions (biological catalysts) of digestion resulting in large molecules being broken into small molecules. |
Food tests | Chemical test to detect the presence of particular nutrients in food. |
Gut bacteria | Microorganisms that naturally live in the intestine and help food break down. |
Lipase | Enzyme that breaks down lipids into fatty acids and glycerol. |
Lipids | Nutrients that provide a store of energy and insulate the body. Sources are butter, milk, nuts. |
Minerals | Essential nutrients needed in small amounts to keep you healthy. Sources are fruit and vegetables. |
Nutrients | Essential substance that your body needs to survive, provided by food. |
Obese | Extremely overweight. |
Protease | Enzyme that breaks down protein into amino acids. |
Proteins | Nutrient your body uses to build new tissue for growth and repair. Sources are meat, fish, eggs. |
Starvation | Extreme case of not eating enough food. |
Vitamins | Essential nutrients needed in small amounts to keep you healthy. Sources are fruit and vegetables. |