What does an enzyme change relative to an uncatalyzed reaction? a) The rate of the reaction. b) The free energy change of the reaction. c) The size of the active site. d) The pH. e) The equilibrium constant.

1)NADH is made from NAD+ by a)An oxidation-reduction reaction b)Oxidative phosphorylation c)A proton gradient d)A dehydration reaction e)Substrate-level phosphorylation 2. The energy used to make ATP via substrate-level phosphorylation is from a(n) a)Electron gradient b)Reduction reaction c)Phosphorylated molecule d)ADP molecule e) Protein gradient 3. Which of the following molecules, as written, is in its reduced form? a)NADH b)O2 c)NAD+ d)FAD e)CO2 4. Cellulose is a good structural molecule because a)The molecule is amphipathic, allow it to interact with water and nonpolar substances b)The bonds between the monomers are difficult to break, increasing its stability c)It is a mix of carbohydrate and protein, allowing it to form multiple types of bonds

The figure below represents a reaction in the presence and absence of an enzyme catalyst. What can you conclude about this reaction? energy activation energy activation energy 1 uncatalysed reaction catalysed reaction A) It is endergonic in the absence of the enzyme. B) It will proceed more quickly in the presence of the enzyme. C) Once the reaction has reached equilibrium, there will be more product in the enzyme-catalyzed reaction. D) It has a negative AG. OE) Both B and D are true

C) acetyl CoA D) ATP 57) Which of the following processes is driven by H+ ions trapped in the inter membrane space? A) oxidative phosphorylation C) ATP hydrolysis B) substrate-level phosphorylation D) reduction of NAD+ to NADH 58) Which of the follovin