Unit 4 Crossword (Uses terms from 1,2,3,4)

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Across
  1. 3. Thin, flexible barrier around a cell. Regulates what enters and leaves the cell.
  2. 4. Small unit that can join together with other small units to form polymers.
  3. 6. Process where a single parent reproduces by itself.
  4. 7. Organelle found in cells of plants and some other organisms that capture sunlight and converts it into chemical energy.
  5. 9. Small particle in the cell on which proteins are assembled. Made of RNA and protein
  6. 13. Threadlike structures with the nucleus that contains the genetic material.
  7. 14. When comparing two solutions, the solution with the greater concentration.
  8. 18. Change over time.
  9. 20. Structure that contains the cells DNA and controls the functions of the cells.
  10. 23. Specialized structure that performs important cellular functions within a eukaryotic cell.
  11. 24. Process in which a cell from two parents unite to create a new organism.
  12. 28. Process by which molecules tend to move from an area of higher concentration to an area of lower concentration.
  13. 29. When the concentrations of two substances are the same.
  14. 31. When the concentration of a solute is the same throughout a solution.
  15. 33. Movement of the specific molecules across cell membranes through protein channels
Down
  1. 1. Double-layered sheet that forms the core of nearly all cell membranes
  2. 2. Energy-requiring process that moves material across a membrane against a concentration difference
  3. 5. Small, dense region within most nuclei in which the assembly of proteins begins.
  4. 7. Strong supportive layer around the cell membrane in plants, algae, and some bacteria.
  5. 8. Organism whose cells does not contain nuclei
  6. 10. Process by which organisms maintain a stable internal environment.
  7. 11. Cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use.
  8. 12. Compound that forms hydrogen ions in a solution.
  9. 15. When comparing two solutions, the solution with the weaker concentration.
  10. 16. The mass of a given solute in a given volume of solution. Mass/volume
  11. 17. Compound that produces hydroxide ions in solution.
  12. 18. Organism whose cells contain nuclei
  13. 19. A large compound formed from combinations of many monomers.
  14. 21. Basic unit of life.
  15. 22. Macromolecule containing carbon, hydrogen, oxygen, nitrogen, and phosphorus. DNA and RNA are examples.
  16. 25. DIffusion of water through a selectively permeable membrane.
  17. 26. Compound made up of carbon, hydrogen, and oxygen. Major source of energy for living organisms.
  18. 27. Protein that acts as a biological catalyst.
  19. 30. Macromolecule made up of carbon and hydrogen. Fats, oils, and waxes.
  20. 32. A weak acid or base that helps prevent sharp, sudden changes in pH.