Gen Bio 1 Exam 2

1. The diffusion of water across a cell membrane
3. Reactions that break down complex molecules into simpler compounds
5. A protein that speeds up a reaction without being consumed by it
7. An allosteric regulator that binds to one of the enzyme subunits and stabilizes the inactive form of the enzyme
9. Certain chemicals that inhibit the action of specific enzymes
11. An allosteric regulator that binds to one of the enzyme subunits and stabilizes the active form of the enzyme
12. Proteins that penetrate the hydrophobic interior of the lipid bilayer
13. A reaction that absorbs free energy; nonspontaneous
16. The cell takes up large molecules within vesicles formed around them at the plasma membrane
18. Energy associated with the movement of atoms or molecules
19. Energy that matter possesses because of its location
21. Membrane proteins that have short carbohydrate chains bound to them
22. The totality of an organism's chemical reactions
23. Channel proteins that enhance the passage of water molecules across cell membranes
25. A form of allosteric regulation where the substrate binds to one active site affecting catalysis in another active site

2. The reactants that an enzyme acts on
4. A solution that has same concentration of water as the solution on the other side of the membrane
6. Energy that matter possesses because of chemical structure
8. Proteins that are not embedded in the membrane lipid bilayer
10. Substance that helps the membrane resist changes in fluidity when temperatures change
14. Large molecules within vesicles that dissolve into the plasma membrane and are secreted to the outside of the cell
15. Solutions with the lower concentration of water
17. Solutions with the higher concentration of water
20. A reaction that releases free energy; spontaneous
24. Reactions that build complex molecules from simpler one