Biology Crossword Puzzle Chapter 4 (sec 3-4)

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Across
  1. 2. hollow tubes made with proteins that keep everything is place
  2. 3. ATP
  3. 5. two short cylinders of microtubules that make right angles, involved in cell division
  4. 8. small organelle that move energy from organic molecules to ATP
  5. 9. made of a polar head and two non-polar fatty acid tails
  6. 12. can be in plant cells and some eukaryotic algae, main molecule that absorbs light energy for the cell
  7. 16. plant cells only, surrounded by double membrane, has its own DNA,
  8. 19. a structure in the nucleus made of DNA and protein
  9. 21. RNA
  10. 22. long hairs the help move the cell, there are a few of them on a cell
  11. 23. plant cells only, flattened membranous sacs that contain chlorophyll
  12. 24. a place in the nucleus with concentrated DNA
Down
  1. 1. organelles made of proteins and RNA that direct protein synthesis in the cytoplasm
  2. 4. Phospholipids side-by-side with the tails facing in toward more phospholipids' tails. The heads face outward (toward water) and the tails face inward (away from water.)
  3. 6. small hairs that help move the cell, there are a lot of them on a cell
  4. 7. threads with protein that help move the cell
  5. 10. DNA
  6. 11. system that can be rough (with ribosomes on it) or smooth (makes lipids), it is sometimes called ER
  7. 13. vesicles from Golgi body that contains digestive enzymes
  8. 14. plant cells only, type of plastid, uses light energy to make carbohydrates from carbon dioxide and water
  9. 15. network of filaments and thin tubes that keeps everything in place
  10. 17. post office of the cell, packs and processes proteins
  11. 18. layer outside of the plasma membrane
  12. 20. double membrane around nucleus that is made of two phospholipid bilayers with engrained proteins