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Across 1. A relationship between two sets that matches each member of the first set with a unique member of the second set 4. any living biological entity, such as an animal, plant, fungus, or bacterium 8. a plastid containing chlorophyll and other pigments, occurring in plants and algae that carry out photosynthesis 12. is the smallest unit that defines the chemical elements 13. is a group of organs that work together to perform one or more functions (2 Words) 15. A compound containing hydrocarbon groups (2 Words) 17. large biological molecules, or macromolecules, consisting of one or more long chains of amino acid residues 18. The movement of atoms or molecules from an area of higher concentration to an area of lower concentration 19. first stated by Matthias Schleiden and Theodor Schwann in 1838–39, (2 Words)

Down 2. The outermost layer of cells in plants, bacteria, fungi, and many algae that gives shape to the cell and protects it (2 Words) 3. A small cavity in the cytoplasm of a cell, bound by a single membrane and containing water, food, or metabolic waste 4. The solvent from the side of weaker concentration usually moves to the side of the stronger concentration 5. Biology. mode of organization; construction and arrangement of tissues, parts, or organs. 6. consist of either one or two long chains of repeating units (2 Words) 7. A substance that cannot be broken down into simpler substances by chemical means 9. The process by which green plants make carbohydrates from carbon dioxide and water in the presence of chlorophyll, using energy captured from sunlight 10. Any of a large class of organic compounds consisting of carbon, hydrogen, and oxygen 11. A large mass of similar cells that make up a part of an organism and perform a specific function 14. A distinct part of an organism that performs one or more specialized functions 16. Any of a large group of organic compounds that are oily to the touch, insoluble in water