AP Bio Unit 3 vocab

Edit Answers
1234567891011121314151617181920212223
Across
  1. 2. main energy source that cells use for most of their work
  2. 5. The third step of aerobic (oxygen required) cellular respiration; electrons from acetyl-CoA are transferred to NADH and FADH2, which will carry electrons to the electron transport chain.
  3. 9. Respiration that does not require oxygen; occurs in the cytosol. Does not produce as much ATP per glucose molecule.
  4. 13. A high-energy electron carrier produced by glycolysis and the Krebs cycle. It carries energy to the electron transport chain, where it is stored in ATP.
  5. 14. The process by which cells break down simple food molecules to release the energy they contain.
  6. 16. A molecule that resembles the normal substrate and competes with the substrate for the active site; decreases enzyme activity.
  7. 17. a region on an enzyme that binds to the substrate during a reaction.
  8. 20. A series of membrane proteins that uses the energy from high energy electrons to produce ATP.
  9. 21. A molecule that reduces the activity of an enzyme by binding to a location remote from the active site, changing the enzymes shape so that it can no longer catalyze a chemical reaction.
  10. 22. Substance that speeds up the rate of a chemical reaction by lowering the activation energy required
  11. 23. A change in the shape of a protein (such as an enzyme) that can be caused by changes in temperature or pH (among other things); results in the loss of secondary, tertiary, and quaternary protein structure.
Down
  1. 1. The folds of the inner membrane of mitochondria; greatly increases the surface area.
  2. 3. A highly folded, disk-shaped membrane compartment inside chloroplasts; the site of the light-dependent reactions.
  3. 4. The first step of cellular respiration; breaks down glucose to produce pyruvate, ATP, NADH, and CO2
  4. 6. Building blocks of protein
  5. 7. Metabolic pathways that build larger molecules; ex: photosynthesis
  6. 8. Step of the Calvin Cycle of photosynthesis where CO2 from the air is incorporated into organic molecules.
  7. 10. A chemical reaction that requires the input of energy in order to proceed.
  8. 11. Concentration of hydrogen ions in a solution
  9. 12. Metabolic pathways that break down molecules; ex: cellular respiration
  10. 15. A difference in proton (H+) concentration on either side of a membrane; produced by proton pumps in the electron transport chain
  11. 18. A chemical reaction that releases energy because the products are more stable (lower energy) than the products
  12. 19. Process by which autotrophs produce glucose using energy from the sun and CO2