Question

14. The molecule 2,4-dinitrophenol (DNP) is an uncoupling agent that breaks down the concentration gradient of protons formed during oxidative phosphorylation. DNP shuttling protons across the cell membrane, equalizing the concentration of protons on either side of the membrane. Which of the following will be true for a bacterium poisoned with DNP? a. The cell will have an increased level of NADH in the cytoplasm b. Oxygen will not be converted to water by the electron transport chain c. Glycolysis will stop working d. Its ATP synthase produce less ATP 15. Select all that apply! Of the following choices, which pathways produce carbon dioxide as waste? a. Lactic acid fermentation b. Oxidative phosphorylation c. Alcohol fermentation d. Glycolysis e. Citric acid cycle f. Beta-oxidation 16. True or false: Inhibition of the electron transport chain by cyanide will result in a lower concentration of NADH within a cell compared to a cell that has not been exposed to cyanide. a. True b. False 17. True or false: an organism that carries out anaerobic respiration will use an organic molecule as the final electron acceptor. a. True b. False 18. During photosynthesis, chlorophyll passes electrons to an electron transport chain. Chlorophyll's electrons are replaced by electrons taken from water. During photosynthesis: a. Water is oxidized b. Water is reduced 19. The active site of an enzyme is where: a. Allosteric effectors bind b. Substrate is converted to product c. Non-competitive inhibitors bind d. Feedback inhibition occurs