Chapter 4 Biology Crossword

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Across
  1. 3. states that all living things are made up of cells, that cells are the basic units of organisms, that each cell in a multicellular organism has a specific job, and that cells come only from existing cells
  2. 5. the region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus
  3. 8. one of the small, tubular fibers composed of the protein tubulin that are found in the cytoplasm of eukaryotic cells
  4. 11. a cell organelle that contains digestive enzymes
  5. 13. an organelle found in plant and algae cells where photosynthesis occurs, contains chlorophyll
  6. 14. one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function
  7. 17. a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids
  8. 19. the cell's outer boundary which is made of a double layer of lipids
  9. 20. a single-celled organism that does not have a nucleus or membrane-bound organelles
  10. 22. an organism made up of cells that have a nucleus
  11. 23. cell organelles that help make and package materials to be transported out of the cell
Down
  1. 1. a cell organelle composed of RNA and protein; the site of protein synthesis
  2. 2. organelle that is the site of cellular respiration, which produces ATP
  3. 4. long, hairlike structures that grow out of a cell and enable the cell to move
  4. 6. short hairlike structures arranged in tightly packed rows that project from the surface of some cells
  5. 7. the smallest unit that can perform all life processes
  6. 9. found mainly in plants, a rigid structure that surrounds the cell membrane and provides support to the cell
  7. 10. a group of similar cells that perform a common function
  8. 12. a collection of tissues that carry out a specialized function of the body
  9. 15. the "headquarters" of the cell
  10. 16. a group of organs working together
  11. 18. the green pigment that is present in most plant and algae cells and some bacteria, that gives plants their characteristic green color, and that absorbs light to provide energy for photosynthesis
  12. 21. one of the structures in the nucleus that are made up of DNA and protein