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What is Life Vocabulary 1. 2. 3. 4. 5. 6. 7. 8. Cell theory- a widely acceted explanation of the relationship between cells and living things Organelle- a tiny cell structure that carries out a specific function within the cell Tissue- a group of similar cells that work together for a specific function Organ-a body structure that is comprised of different kids of tissues that work together Organ system- a group of organs that work together to perform a major body function Multicellular- consisting of many cells Unicellular-made of a single cell Element- a pure substance that cannot be broken down into other substances by chemical or physical means 9. Compound- a substance made of two or more elements chemically combined in a specific ration or proportion 10. Double helix- the shape of a DNA molecule 11. Selectively permeable- a property of the cell membrane that allos some substance to pass across it, while others cannot 12. Passive transport- the movement of dissolved materials across a cell membrane without using cellular energy 13. Active transport- the movement of materials across a cell membrane using cellular energy What is Life Vocabulary 1. 2. 3. 4. 5. 6. 7. 8. Cell theory- a widely acceted explanation of the relationship between cells and living things Organelle- a tiny cell structure that carries out a specific function within the cell Tissue- a group of similar cells that work together for a specific function Organ-a body structure that is comprised of different kids of tissues that work together Organ system- a group of organs that work together to perform a major body function Multicellular- consisting of many cells Unicellular-made of a single cell Element- a pure substance that cannot be broken down into other substances by chemical or physical means 9. Compound- a substance made of two or more elements chemically combined in a specific ration or proportion 10. Double helix- the shape of a DNA molecule 11. Selectively permeable- a property of the cell membrane that allos some substance to pass across it, while others cannot 12. Passive transport- the movement of dissolved materials across a cell membrane without using cellular energy 13. Active transport- the movement of materials across a cell membrane using cellular energy