Biology Unit 1

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Across
  1. 2. channel protein that allows water through the membrane at a very high rate
  2. 4. membrane-embedded protein complex that adds a phosphate to ADP with energy from protons diffusing through it
  3. 7. large molecule necessary for life that is built from smaller organic molecules
  4. 10. three-carbon sugar that can be decarboxylated and oxidized to make acetyl CoA, which enters the citric acid cycle under aerobic conditions; the end product of glycolysis
  5. 12. pigment or other organic molecule in the reaction center that accepts an energized electron from the reaction center
  6. 16. short, hair-like structure that extends from the plasma membrane in large numbers and functions to move an entire cell or move substances along the cell's outer surface
  7. 17. cytoskeletal component, comprised of several fibrous protein intertwined strands, that bears tension, supports cell-cell junctions, and anchors cells to extracellular structures
  8. 18. potential energy in chemical bonds that releases when those bonds are broken
  9. 19. detaching the cell membrane from the cell wall and constricting the cell membrane when a plant cell is in a hypertonic solution
  10. 20. first stage of photosynthesis where certain wavelengths of the visible light are absorbed to form two energy-carrying molecules (ATP and NADPH)
Down
  1. 1. area of high concentration adjacent to an area of low concentration
  2. 3. receptor protein that is located in the cytosol of a cell and binds to ligands that pass through the plasma membrane
  3. 5. high-energy, unstable state (an intermediate form between the substrate and the product) occurring during a chemical reaction
  4. 6. two sugar monomers that a glycosidic bond links
  5. 8. group of organelles and membranes in eukaryotic cells that work together modifying, packaging, and transporting lipids and proteins
  6. 9. region surrounding the nucleus; contains electron(s)
  7. 11. stack of thylakoids located inside a chloroplast
  8. 13. process of converting inorganic CO2 gas into organic compounds
  9. 14. enzyme's specific region to which the substrate binds
  10. 15. pathways in which complex molecules break down into simpler ones