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Organ System A group of organs that acomplish similar functions Phospholipid Bilayer 2 layered arranged of phosphate and lipid molecules to form a cell membrane Chromosomes Directs groth and reproduction; found in the nucleus Cell Theory Has 3 parts, all living thing composed of cells, cells are the basic units of structure and function in living things, new cells produced from existing cells Nuclear Envelope Double membrane that surrounds a cell nucleus Central Vacuole Fluid-filled organelle that stores water and enzymes Chloroplast Uses light and energy to make carbohydrates from carbon, dioxide and water Microtubules Hallow tubes that are made of protein Plastids Surrounded by a double membrane; contains own DNA Nucleolus Dense area around nuclei Cytoskeleton Thin tubes and filaments that crisscross sytosol Plasma Membrane Cells outer boundry Nucleus Center of the cell Lysomes Vesicles bud from the golgi apparatus;contains digestive enzymes Cilia Short hair-like structure thats extendes from surface of a cell Flagella small tail like organelles that squiggle to move an organism Endoplasmic Reticulum the cell's highway, transfers Thylakoids Disk shaped structures inside chloroplasts. Golgi Apperatus Prepares materials to be released from the cell. Ribosomes Made of protien and RNA;directs protien synthesis in cytoplasm; responsiable for building protien Organelles Well difined, intracellular bodies that performs specific functions for the cell Cytoplasm Within plasma membrane; contains fulid, cytoskeleton, and everything but the nucleus Cell Wall Rigid layer that lies outside the plasma membrane Centrioles two tiny structures located in the cytoplasm near the nuclear envelope Chlorophyll green substance in a leaf that traps sunlight Microflaments Long threads of protein actin; linked together Mitochandria are tiny organells that transfer energy from organic molecules or nutrients to ATP; Power house to the cell Prokaryotes Organisms that lack a membrane bound nucleus and organelles Cell Smallest unit that can carry out all of lifes processes Eukaryotes Made up of one or more cells that have a nucleus and membrane bound organelles Tissue A group of smaller cells and their products that carry out a specific job Organs Group of tissue; performs job in an organism