Biology Crossword Puzzle

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Across
  1. 3. cellular organelles where cellular respiration occurs
  2. 7. net movement of the particles of a substance from where they are more concentrated to where they are less concentrated
  3. 8. straight hollow tube of proteins that gives rigidity, shape, and organization to a cell
  4. 12. having a lower concentration of solute than another
  5. 13. long, thin, whip-like structures with a core of micro-tubules, that enable some cells to move
  6. 14. membrane bound sac containing digestive enzymes that can break down proteins, nucleic acids, and polysaccharides
  7. 16. main energy source that cells use for for most of their work
  8. 17. small membrane bound sac that functions in moving products into, out of, and within a cell
  9. 18. short structures projecting from a cell and containing bundles of micro-tubules that move a cell through its surroundings or move fluid over the cells surface
Down
  1. 1. solid rod of protein, thinner than a micro-tubule, that enables a cell to move or change shape
  2. 2. cluster of proteins and nucleic acid that constructs proteins in a cell
  3. 4. having a higher concentration of solute than another solution
  4. 5. ball like mass of fibers and granules in a cell nucleus
  5. 6. the central core that contains protons and neutrons
  6. 8. photograph of the view through a microscope
  7. 9. organelle found in some plant cells and certain unicellular organisms where photosynthesis takes place
  8. 10. part of the cell with a specific function
  9. 11. having a solute concentration equal to that of another solution
  10. 15. passive transport of water across a selectively permeable membrane
  11. 17. membrane bound sac that buds from the endoplasmic reticulum or the Golgi apparatus