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2011-08-19 13:59:11
Cells Advanced Placement Biology Ninth Grade

Cells Vocabulary for AP Biology Ninth Grade
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  1. Cell
    The basic unit of structure and function in living things; the smallest units in living things that show the characteristics of life
  2. Prokaryotic Cells
    Cells lacking distinct membrane-bound structures; monerans, bacteria, or blue-green algae
  3. Eukaryotic Cells
    Cells containing membrane-bound nuclei
  4. Organelles
    The specialized structures in the cytoplasm of cells that carry out specific functions
  5. Nucleus
    A large membrane-enclosed organelle that contains the cell’s DNA
  6. Cell Wall
    The rigid structure that encloses the cells of plants and various microorganisms
  7. Cell Membrane
    The structure that encloses the interior of a cell and controls the passage of materials into and out of the cell; plasma membrane
  8. Nucleoli
    Dense, granular bodies that are found in the nucleus of cells and are a site of RNA production
  9. Nuclear Membrane
    The structure that surrounds the nucleus
  10. Chromatin
    The material of which chromosomes are composed
  11. Cytoplasm
    The watery material between the nucleus and the cell membrane of a cell
  12. Endoplasmic Reticulum
    A system of fluid-filled canals enclosed by membranes
  13. Ribosomes
    The organelles that are the sites of protein synthesis in cells
  14. Golgi Bodies
    The organelles consisting of stacks of membranes forming flattened sacs in the proteins synthesized by cells
  15. Lysosomes
    The small, saclike structures surrounded by single membranes and containing strong digestible or hydrolytic enzymes
  16. Mitochondria
    oval membrane-enclosed organelles in which most of the reaction of cellular respiration occur
  17. Vacuoles
    A membrane enclosed, fluid-filled cavity in a cell
  18. Centrioles
    Cylindrical organelles found near the nucleus in animal cells that are involved in mitosis
  19. Endosymbiosis
    The condition in which one organism lives inside the cell of another to the benefit of both
  20. Chloroplasts
    The plastids that contain chlorophyll, the sites of photosynthesis in eukaryotic cells
  21. Plastids
    membrane-enclosed organelles found in the cells of some protists and almost all plants; includes chloroplasts, chromoplasts, and leucoplasts
  22. Leucoplasts
    The colorless plastids in which starch of other plant nutrients are stored
  23. Chromoplasts
    The plastids that contain pigments other than chlorophyll
  24. Diffusion
    The movement of molecules or particles from an area of greater concentration to an area of lesser concentration
  25. Osmosis
    The diffusion of water across a semi permeable membrane from a region of high concentration of water to a region of low concentration of water
  26. Active Transport
    A process in which the movement of materials across a cell membrane requires the expenditure of cellular energy