Cells - Crossword Review

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Across
  1. 1. jelly-like material that fills the cell and surrounds the organelles; contains nutrients the cell needs to survive
  2. 3. describes living things made of a single cell (e.g., diatom, amoeba, paramecium)
  3. 5. that can be easily permeated or penetrated (by air or water, for example)
  4. 6. movement of particles from an area of higher concentration to an area of lower concentration
  5. 9. process by which a cell divides into two new cells (2 words)
  6. 12. process by which mitochondria provides energy by transforming oxygen and sugar into carbon dioxide and water (2 words)
  7. 15. membrane-bound organelles that break down food particles and release their stored energy into a form that the cell can use to fuel all of its activities; powerhouses of the cell
  8. 16. movement of substances into and out of a cell; involves several different processes, such as diffusion and osmosis (2 words)
  9. 17. process by which the chlorophyll in chloroplasts uses the Sun's energy to convert carbon dioxide and water into sugar and oxygen
  10. 19. the cell is the basic unit of life; all organisms are made up of one or more cells; (3) all cells come from existing cells (2 words)
  11. 21. organelle that breaks down food and digests wastes
  12. 23. small structure (part) inside a cell that performs a specific function to meet the cell’s basic needs to survive and reproduce
  13. 24. organism that can only be seen under a microscope (e.g., bacteria, amoebas, and certain algae and fungi
  14. 25. large, membrane-bound, sac-like organelles that stores excess food, waste, and other substances required by the cell
  15. 26. thin structure that separates an interior environment from its exterior surroundings (e.g., cell membrane); organelle membranes keep different parts of the cell separate from one another
  16. 27. membrane-bound organelle of a plant cell that contains a green substance (pigment) called chlorophyll; chlorophyll uses the Sun's energy to convert carbon dioxide and water into sugar and oxygen in a process called photosynthesis
Down
  1. 2. refers to the property of a barrier, such as a cell membrane, that allows only certain substances to pass through it (2 words)
  2. 4. describes living things made of more than one cell that rely on a variety of types of cells (specialized cells) to perform cellular functions
  3. 7. basic structural unit of an organism and the building block of life; all living things are made of cells
  4. 8. tiny organelles in the cell’s cytoplasm that helps make proteins
  5. 10. folded organelle that combines proteins made by the endoplasmic reticulum and delivers them to the rest of the cell and outside the cell
  6. 11. rigid structure that surrounds the cell membrane of plant cells; provides strength and support for a plant cell (2 words)
  7. 13. folded organelle in a cell that makes proteins
  8. 14. that cannot be passed through (by air or water, for example)
  9. 18. large organelle that controls all the activities in a cell, such as growth, repair, and reproduction
  10. 19. thin covering that holds the cytoplasm and organelles inside a cell and controls the passage of materials in or out of the cell (2 words)
  11. 20. microscope that uses light focussed through several different lenses, which make up the eyepiece and the objective lenses, to form a magnified image of a specimen (3 words)
  12. 22. special kind of diffusion in which a fluid (usually water) moves through a selectively permeable membrane from an area of higher concentration to an rea of lower concentration