Science Key Words
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Absorbtion | Digested food molecules are absorbed through the intestinal wall and carried by the bloodstream to be used in the cells of the body. Waste products and fibre remains in the digestive system.
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| Egestion | Water is absorbed and then all undigested solids are pushed out as faeces (solid waste)
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| Heterotroph | An organism deriving it's nutritional requirements from complex organic substances.
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| Enzymes | A substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
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| Chloroplast | A plastid in green plant cells which contains chlorophyll in which photosynthesis takes place.
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| Digestion | The process of breaking down large molecules that can be absorbed into the circulatory system system for use throughout the body.
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| Photosythesis | The process by which green plants and some other organism use sunlight to synthesize nutrients from carbon dioxide and water.
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| Palisade cells | Their chloroplasts absorb a major portion of the light energy used by the leaf.
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| Lipids | Any of a class of organic compounds that are fatty acids.
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| Oesophagus | The part of the alimentary canal that connects the throat to the stomach.
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| Iodine Solution | A food test to detect the presence of starch.
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| Biuret Test | This is a food test to detect the presence of protien
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| Large Intestine | The Colon and Rectum collectively.
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| Carbohydrates | Can take the form of simple sugars eg. glucose or complex sugars such as starch.
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| Autotroph | A plant that can make its own food through the process of photosynthesis.
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| Benedict Solution | This is a food test for simple or single sugars like glucose.
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| Protein | Is a compulsory part of our dietary components. It makes up most of our body tissue such as muscle and hair etc and also enzymes and anti bodies.
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| Ingestion | The process of taking food, drink or another substance into the body by swallowing or absorbing it.
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