Cell Respiration Review Questions Answer Key

Key CELLULAR RESPIRATION MULTIPLE CHOICE. Circle ALL that are TRUE. There may be MORE THAN one correct answer. 1. is the first step in cellular respiration that begins releasing energy stored in glucose. A. Alcoholic fermentation B. Lactic acid fermentation C. Glycolysis D. Electron transport chain 2. The carriers for energy and high energy electrons resulting from glycolysis and the krebs cycle are A. ATP B. NADH CFADH2 D. NADPH 3. If oxygen is NOT present, glucose is broken down by A. Krebs cycle B. electron transport chain C. fermentation (anaerobic respiration) 4. Name the 3 carbon molecule produced when glucose is broken in half during glycolysis. A pyruvic acid B. lactic acid C. Acetyl-CoA D. citric acid 5. Since fermentation does not require oxygen it is said to be A. aerobic B. anaerobic 6. Write the complete overall chemical equation for cellular respiration using words: Sugar. Okygen ATP Carbon • dioxide. Water 7. Compare this reaction to PHOTOSYNTHSIS (6 H₂O 6 CO₂ light energy CH2O 602) How are these equations related? Opposites & dependent on each other 8. Write the equations in words for the two kind of fermentation: Alcoholic fermentation Sugar ethanol Lactic acid fermentation lactic Jugar ATP acid 1 + Tell the kind of fermentation (alcohol or lactic acid) used in each example: 9. Yeast uses this to make bread dough rise alcohol 10. Your muscle cells use this during rapid exercise when oxygen is low lactic acid 11. Bacteria and yeast use this to make beer and wine alcohol The Krebs Cycle and Electron Transport MULTIPLE CHOICE: Circle the answer or answers that best complete the statement or answer the question. (THERE MAY BE MORE THAN ONE RIGHT ANSWER.) 12. Which of the following shows the correct sequence during cellular respiration? A. Electron transport chain glycolysis Krebs cycle B. Glycolysis Electron transport chain Krebs cycle C. Krebs cycle Electron transport chain glycolysis D. Glycolysis Krebs cycle Electron transport chain 13. Where do the carbon atoms in pyruvic acid end up following the Krebs cycle? A. They enter the electron transport chain and make ATP B. They become part of a carbon dioxide molecule and end up in the atmosphere C. They join with citric acid to make Acetyl-CoA D. They build up in the intermembrane space 14. When cellular respiration requires oxygen it is said to be A aerobic B. anaerobic 15. The movement of which ion across the membrane from the intermembrane space to the matrix causes ATP synthase to spin and make ATP A. Na ions B. oxygen C.H ions D. water 16. Which stage of cellular respiration produces the most ATP? A. glycolysis B. Krebs cycle C Electron transport D. Acetyl-CoA charging