Science Unit 3 Flash Cards - Cell

Term Definition
Ribosomes Building site for the proteins of the cell
Cell Membrane Thin membrane that surrounds the cytoplasm of a cell; regulates the passage of materials in and out of the cell.
Rough ER Clear tubular passageways studded with ribsomes; for transportation of materials through the cell
Vacuole Stores water and food in both plant and animal cells (larger in plants)
Structures How the parts are put together
Centrioles Tube-like structures that exists in pairs in animal cells; guides the chromosomes during cell division
Nucleus Found in eukaryotic cells; contains genetic material (DNA) responsible for controlling the activities of the cell
Mitochondria Functions in energy production; the powerhouse of the cell
Lysosomes Holds waste materials from the cell; breaks down food, worn out pieces of cells and other waste. Generally found in animal cells
Flagellum Long whip-like structure that allows a cell to move
Smooth ER Clear tubular passageways (free of ribosomes); for transportation of materials throughout the cell
Golgi Body Stores, packages, and ships cellular materials
Cell Wall Surrounds the cell membrane of a plant cell to give structure and protection to the cell
Cell Theory Cells are the basic unit of all living things, all living things are composed of one or more cells, all cells come from pre-exisiting cells
Chloroplast Green organelle in plant cells that converts light energy into chemical energy
Chromosomes Found in the nucleus and made of DNA, these contain genetic information of the cell
Cilia Hair-like structures that extend from the surface of the cell to help with movement
Cytoplasm Jelly-like material that fills the cell; and in eukaryotic cells, surrounds the nucleus

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