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Across 1. a tiny, somewhat mitten-shaped organelle occurring in great numbers in the cell cytoplasm either freely, in small clusters, or attached to the outer surfaces of endoplasmic reticula, and functioning as the site of protein manufacture. 6. specialized, usually spherical mass of protoplasm encased in a double membrane, and found in most living eukaryotic cells, directing their growth, metabolism, and reproduction, and functioning in the transmission of genic characters. 7. an organelle, consisting of layers of flattened sacs, that takes up and processes secretory and synthetic products from the endoplasmic reticulum and then either releases the finished products into various parts of the cell cytoplasm or secretes them to the outside of the cell. (2 Words) 8. the green coloring matter of leaves and plants, essential to the production of carbohydrates by photosynthesis, and occurring in a bluish-black form. 10. the semipermeable membrane enclosing the cytoplasm of a cell. (2 Words) 14. a membrane-bound cavity within a cell, often containing a watery liquid or secretion. 15. an organelle in the cytoplasm of cells that functions in energy production. 16. a cell organelle containing enzymes that digest particles and that disintegrate the cell after its death. 17. a conspicuous, rounded body within the nucleus of a cell. 18. made up of two lipid bilayer membranes which in eukaryotic cells surrounds the nucleus, which encases the genetic material. (2 Words)

Down 2. a network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface. (2 Words) 3. a plastid containing chlorophyll. 4. the cell substance between the cell membrane and the nucleus, containing the cytosol, organelles, cytoskeleton, and various particles. 5. the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell. (2 Words) 9. a usually microscopic structure containing nuclear and cytoplasmic material enclosed by a semipermeable membrane and, in plants, a cell wall; the basic structural unit of all organisms. 11. any organism having as its fundamental structural unit a cell type that contains specialized organelles in the cytoplasm, a membrane-bound nucleus enclosing genetic material organized into chromosomes, and an elaborate system of division by mitosis or meiosis, characteristic of all life forms except bacteria, blue-green algae, and other primitive microorganisms. 12. any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops 13. a specialized part of a cell having some specific function; a cell organ.