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12 Cards in this Set
- Front
- Back
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Mixture
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a combination of substances in which individual substances retain their own properties. They can be liquids, solids or gases. Example: mixing salt and sugar.
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Organic Compound
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Compounds that contain carbon. There are 4 types in living things: Carbohydrates, Lipids, Protein and Nucleic acid.
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Enzyme
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Proteins that speed up the chemical reactions in cells without being changed.
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Inorganic Compounds
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Organisms made from elements other than carbon, for example, water.
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Diffusion
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The movement of molecules from an area where there are many to an area where there are few. It results from the random movement of particles.
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Equillibrium
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When molecules of a substance are spread evenly throughout a space. Molecules contiunue to move though to maintain this equillibrium
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Osmosis
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Diffusion of water through a cell membrane.
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Passive Transport
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The movement of particles across the cell membrane by diffusion-requiring no energy.
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Active Transport
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When materials require energy to move through a cell membrane.
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Metabolism
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The total of all chemical activities of an organism that enable it to stay alive, grow and reproduce.
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Producer
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An organism that make their own food, like plants for example.
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Consumer
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An organism that can't make its own food and rely on others for their food
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