Chapter 2 Cell Structure and Function

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Across
  1. 4. macromolecule that forms when a long chain of nucleotides join together
  2. 9. membrane-bound cell structure with a specialized function
  3. 11. movement of substances through a cell membrane using the cell's energy
  4. 13. stiff structure outside the cell membrane
  5. 16. reaction used to obtain energy from food when oxygen levels are low
  6. 18. process during which a cell's vesicles release their contents outside the cell
  7. 19. process by which glucose is broken down
  8. 21. large macromolecule that does not dissolve in water
  9. 23. movement of substances through a cell membrane without using energy
  10. 24. living things are made of one or more cells, the cell is the smallest unit of life, all living things come from cells
Down
  1. 1. long change of amino acid molecules
  2. 2. series of chemical reactions that convert energy in food to molecules of ATP
  3. 3. substance that forms by joining many small molecules
  4. 5. membrane-bound organelle that uses light energy and makes food
  5. 6. one or more sugar molecules
  6. 7. when molecules pass through a cell membrane using transport proteins
  7. 8. fluid inside a cell that contains salts and other molecules
  8. 10. process during which a cell takes in a substance by surrounding it with the cell
  9. 12. diffusion of water molecules only through a membrane
  10. 14. series of reactions that convers light energy, water and CO2 into glucose and give off oxygen
  11. 15. network of threadlike proteins inside a cell
  12. 17. directs all cell activities and contains DNA
  13. 20. protects the inside of a cell from the environment
  14. 22. movement from an area of higher concentration to an area of lower concentration