chapt

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Across
  1. 3. Organelles that produce energy (ATP) for the cell; known as the "powerhouse of the cell."
  2. 7. A rigid outer covering present in plant cells that provides shape, support, and protection.
  3. 12. A thin, selectively permeable membrane that surrounds the cell and controls the movement of substances in and out.
  4. 14. The genetic material responsible for inheritance and cellular functions.
  5. 16. A cell without a true nucleus and membrane-bound organelles
  6. 18. Thread-like structures in the nucleus that carry hereditary information.
  7. 19. Tiny organelles responsible for protein synthesis.
  8. 20. A network of membranes involved in protein and lipid synthesis and transport.
Down
  1. 1. The jelly-like substance inside the cell where cell organelles are suspended.
  2. 2. Movement of molecules from a region of higher concentration to lower concentration.
  3. 4. The control center of the cell that contains genetic material (DNA).
  4. 5. Modifies, packages, and transports proteins and lipids.
  5. 6. CellTheory States that all living organisms are made of cells, and cells are the basic units of life. New cells arise from pre-existing cells.
  6. 8. A cell with a true nucleus and membrane-bound organelles A thin, selectively permeable membrane that surrounds the cell and controls the movement of substances in and out.
  7. 9. Organelles found in plant cells. They include chloroplasts, chromoplasts, and leucoplasts.
  8. 10. Movement of water through a selectively permeable membrane from a region of higher water concentration to lower water concentration.
  9. 11. States that all living organisms are made of cells, and cells are the basic units of life. New cells arise from pre-existing cells.
  10. 13. A green plastid containing chlorophyll that carries out photosynthesis.
  11. 15. A storage sac for water, food, and waste materials.
  12. 17. Membrane-bound sacs containing digestive enzymes; called the "suicidal bags" of the cell.