Key Terms for Exam 2

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Across
  1. 2. the process of converting inorganic CO2 gas into organic compounds
  2. 3. a combination of carbohydrates and lipids
  3. 4. an inorganic ion that is required for optimal enzyme activity
  4. 6. programmed cell death
  5. 7. protein a membrane protein that moves a substance across the plasma membrane by changing its own shape
  6. 10. a molecule that is capable of absorbing certain wavelengths of light and reflecting others
  7. 12. a type of active transport that moves substances into a cell
  8. 16. a small, non-protein molecule that propagates a signal within the cell after activation of a receptor causes its release
  9. 18. a molecule produced by a signaling cell that binds with a specific receptor, delivering a signal in the process
  10. 19. all of the chemical reactions that take place inside cells, including anabolic and catabolic pathways
  11. 20. an organism capable of producing its own organic compounds from inorganic carbon and energy from sunlight
Down
  1. 1. a type of active transport that moves substances out of a cell
  2. 5. protein a membrane protein that allows a substance to pass through its hollow core across the plasma membrane
  3. 8. a channel protein that allows water through the membrane at a very high rate
  4. 9. an organism that gets carbon from inorganic sources
  5. 11. a combination of carbohydrates and proteins
  6. 13. a small organic molecule that is required for optimal enzyme activity
  7. 14. an organism that consumes organic substances or other organisms for carbon
  8. 15. a matrix of proteins and sugars that protects colonies of pathogenic bacteria from the host immune system
  9. 17. a substance that is dissolved in a liquid to form a solution