Cells Julien St James

  • Nucleus - A 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.
  • Nuclear Envelope - The double membrane surrounding the nucleus within a cell.
  • Nuclear Pore - Any of numerous structures with complex openings in a nuclear membrane which allow passage of molecules between the nucleus and surrounding cytoplasm; any of the numerous perforations in a nuclear membrane which allow materials to flow in and out.
  • Nucleolus - A conspicuous, rounded body within the nucleus of a cell.
  • Cell Membrane - The semipermeable membrane enclosing the cytoplasm of a cell.
  • Cell Wall - The definite boundary or wall that is part of the outer structure of certain cells, as a plant cell.
  • Mitochondria - An organelle in the cytoplasm of cells that functions in energy production.
  • Lysosome - A cell organelle containing enzymes that digest particles and that disintegrate the cell after its death.
  • Ribosome - 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.
  • Golgi apparatus - 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.
  • Vacuole - A membrane-bound cavity within a cell, often containing a watery liquid or secretion.
  • Endoplasmic Reticulum - A network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface or studded with ribosomes involved in the transport of materials.
  • Centriole - a small, cylindrical cell organelle, seen near the nucleus in the cytoplasm of most eukaryotic cells, that divides in perpendicular fashion during mitosis, the new pair of centrioles moving ahead of the spindle to opposite poles of the cell as the cell divides: identical in internal structure to a basal body.
  • Cytoplasm - A small, cylindrical cell organelle, seen near the nucleus in the cytoplasm of most eukaryotic cells, that divides in perpendicular fashion during mitosis, the new pair of centrioles moving ahead of the spindle to opposite poles of the cell as the cell divides: identical in internal structure to a basal body.

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Julien St. James
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Created with images by Iqbal Osman1 - "blast cells"

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