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7.12DEF Cell Organelles & Cell Theory

Organelle Tiny specialized cell structure that carries out a specific function within the cell.
Cell Membrane Thin tissue that forms the outer surface of the cytoplasm of a cell & regulates the passage of substances & materials in & out of the cell.
Nucleus Organelle found in eukaryotic cells that contains genetic material responsible for controlling the activities of the cell.
Cytoplasm Jellylike & fluid material that makes up much of a cell inside the cell membrane, surrounds the nucleus in eukaryotic cells, & in which the organelles are suspended; cyto = hollow
Mitochondrion Organelle in the cytoplasm of eukaryotic cells that functions in energy production - power factory of the cell.
Vacuole Organelle that stores water & nutrients in both plant & animal cells; 1 large central unit in plant cells, but many small units in animal cells.
Chloroplast Green organelle in plant cells that converts light energy into chemical energy (Photosynthesis); chlor = green; plast = small particle
Cell Wall Rigid structure that surrounds the cell membrane of a plant cell to give it support & protection.
Cellular Respiration Process of obtaining energy from the breaking of chemical bonds in nutrients; respire = breathe
Photosynthesis Chemical reaction in which plants convert radiant energy into chemical energy; also converts carbon dioxide & water into oxygen & glucose; photo = light; synthesis = combine
CELL THEORY Widely accepted explanation of the relationship between cells & living things; explains that the cell is the fundamental structural & functional unit of living matter.
CELL Smallest unit of an organism; is enclosed by a membrane & performs life functions.
ORGANISM Individual form of life that's capable of growing, taking in nutrients, & usually reproducing (organ systems working together).
CELL DIVISION Process by which a cell divides into 2 new daughter cells.
MICROSCOPE Device that produces magnified images of structures that are too small to see with the unaided eye.
Created by: trauberk