Biology- Semester 1 Midterm

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Across
  1. 2. produces ribosomes
  2. 4. control center of the cell that contains all of the DNA
  3. 6. type of chemical bond formed through the sharing of electrons
  4. 7. an individual building block
  5. 9. water's ability to be pulled up the stems of plants is known as __________ action
  6. 10. simpler cells that lack a nucleus
  7. 12. specific electrons in the outermost energy level of an atom
  8. 16. the _________ heat of a substance refers to the amount of energy required to raise the temperature of that substance
  9. 17. cell's powerhouse (generates the energy)
  10. 19. type of protein required for active transport
  11. 20. large, organic molecule
  12. 24. special type of channel protein for water molecules
  13. 25. type of diffusion that uses proteins to transport large or charged particles down the gradient
  14. 26. property that refers to a molecules uneven distribution of charge
  15. 27. positively charged particles inside the nucleus of an atom
  16. 29. type of chemical bond that forms through the transfer of electrons
  17. 30. building block for nucleic acids
  18. 32. solute concentration is higher inside cell (water moves in)
  19. 33. makes up majority of the cell membrane
  20. 36. cell transport process that uses energy to bring in greater quantities of large molecules
  21. 38. this type of transport goes down the concentration gradient without the use of energy
  22. 39. another name for "cell" membrane
  23. 40. smallest unit of matter
Down
  1. 1. even distribution of molecules inside/outside of cell
  2. 3. organic molecule that provides immediate energy
  3. 5. plant specific cell organelle; site for photosynthesis
  4. 8. solute concentration is lower inside cell (water moves out)
  5. 11. the process of building large, organic molecules
  6. 13. cells that contain a nucleus and membrane bound organelles
  7. 14. form of cell transport that flows "against" the concentration gradient
  8. 15. two or more elements chemically bonded together; can be broken down into simpler substances
  9. 18. molecules that are dissolved in a substance and form a solution
  10. 21. this is required to move molecules "against" the concentration gradient
  11. 22. "protein factory"
  12. 23. long term energy storage built from glycerol and fatty acids
  13. 28. type of "acid" that serves as the building block for proteins
  14. 31. the ability of water molecules to stick to other water molecules
  15. 34. small, circular segments of bacterial DNA
  16. 35. subatomic particle inside the nucleus of an atom that carries no charge but helps determine the atomic mass
  17. 37. the diffusion of water