Cell Processes Vocabulary

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Across
  1. 4. a type of passive transport that uses carrier and channel proteins to help molecules move across a cell membrane
  2. 6. the movement of chemicals across a membrane from an area of high concentration to low without the need for cellular energy
  3. 8. the amount of matter stays the same even when a substance changes form
  4. 11. any external solution that has the same solute concentration and water concentration compared to body fluids
  5. 17. a chemical reaction that releases energy by light or heat
  6. 20. the minimum energy required for a reaction to occur
  7. 21. the process by which green plants and certain other organisms transform light energy into chemical energy
  8. 22. a biological catalyst that is usually a protein but could be RNA
  9. 24. the movement of water molecules from a solution with a high concentration to lower concentration of water molecules through a cell's partially permeable membrane
  10. 27. the process by which organisms combine oxygen with foodstuff molecules
  11. 28. the source of energy for use and storage at the cellular level
Down
  1. 1. an energy-driven process where membrane proteins transport molecules across cells
  2. 2. to make a chemical reaction happen or happen more quickly by acting as a catalyst
  3. 3. the movement of molecules from an area of high concentration to low concentration
  4. 5. any external solution that has a high solute concentration and low water concentration compared to body fluids
  5. 7. "without oxygen"
  6. 9. a membrane that only allows certain materials to pass through
  7. 10. any chemical reaction that absorbs heat from its environment
  8. 12. moves sodium and potassium ions against large concentration gradients
  9. 13. the process by which cells take in substances from outside of the cell by engulfing them in a vesicle
  10. 14. a substance that can be dissolved into a solution by a solvent
  11. 15. energy can neither be created nor be destroyed
  12. 16. an analogy used to describe the specific action of an enzyme with a substrate
  13. 18. the smallest structural and functional unit of an organism
  14. 19. a solution that has a lower concentration of solute compared to the cell
  15. 23. model proposing that the binding of a substrate or some other molecule to an enzyme causes a change in the shape of the enzyme to enhance/inhibit its activity
  16. 25. the combustion of carbohydrates and fats in the presence of oxygen
  17. 26. a homogeneous mixture of one or more solutes dissolved in a solvent