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Understanding Photosynthesis and Cellular Respiration

This trivia quiz explores essential biochemical processes, including the roles of chloroplasts and mitochondria in cells. Learn why plants need both to produce and break down glucose, the major products of glycolysis, and the different pathways of respiration including aerobic and anaerobic methods. Discover the significance of fermentation, the Krebs cycle, and the electron transport chain in energy production. Engage with questions on crucial steps and molecules involved in these metabolic pathways.

abra-mcpherson
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Understanding Photosynthesis and Cellular Respiration

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  1. TRIVIA Chapter 7 MACHINE

  2. TRIVIA ROUND 1 MACHINE

  3. Why do plants need both chloroplasts and mitochondria? Chloroplasts needed to produce glucose from light energy; mitochondria needed to break down glucose to produce ATP 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  4. What is the major energy-containing product made in glycolysis that continues to be oxidized (broken down)? Pyruvate (2 for each glucose!) 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  5. After glycolysis, most cells will continue to break down glucose using which biochemical pathway? Aerobic respiration 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  6. What are the two most common types of fermentation? Lactic acid fermentation and alcoholic fermentation 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  7. What kinds of organisms would an anaerobic pathway provide enough energy for? Some unicellular organisms (like bacteria or yeast); they have lower energy needs 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  8. Is glycolysis aerobic or anaerobic? Anaerobic – no oxygen is needed! 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  9. What gas is released in the process of converting pyruvate into acetyl CoA? Carbon dioxide 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  10. Describe the mitochondrial matrix. It’s the area inside the inner membrane of the mitochondria that contains enzymes that catalyze the reactions of the Krebs cycle. 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  11. What are the three steps of the transition reaction? Pyruvate combines with coenzyme A CO2 is released NAD+ is reduced to NADH + H+ 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  12. What’s the first major product made in the Krebs Cycle? Citric acid (The Krebs is also called The Citric Acid Cycle for this reason!) 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  13. What molecule temporarily stores the energy from food molecules for cells to use? adenosine triphosphate (ATP) 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  14. What kinds of organisms carry out cellular respiration? Both autotrophs and heterotrophs 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  15. What happens to the electrons when they reach the end of the ETC? They combine with oxygen and protons to form water. 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  16. What is cellular respiration? Process in which cells break down organic molecules to make ATP 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  17. Explain how water is a product of the ETC. Electrons from the ETC combine with protons flowing back into the matrix and oxygen. O2 + 4 e- + 4 H+ → 2 H2O 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  18. What happens in muscles that are exercised extensively in the absence of enough oxygen? Cells switch to lactic acid fermentation; lactic acid builds up in cells causing muscle soreness 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  19. How does the efficiency of cellular respiration compare to glycolysis alone? Cell respiration is 20 times more efficient. 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  20. What enzyme is necessary for chemiosmosis and ATP production to occur? ATP synthase 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  21. How many NADH are made in glycolysis? What are they used for in aerobic respiration? 2; they will donate electrons to the ETC 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  22. For every glucose molecule, the Krebs cycle must happen ______. twice 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  23. Where do the ATP molecule that are formed go? Diffuse out of the mitochondria into the cytosol for the cell to use. 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  24. What are the 3 steps of the Krebs cycle? Acetyl CoA (2C) + oxaloacetic acid (4C) → citric acid (6C) Citric acid converted into 5C compound: 1 CO2 is lost and 1 ATP is made 5C compound regenerates 4C oxaloacetic acid; 1 CO2 is lost, 3 NADH and 1 FADH2 are made 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  25. For every glucose molecule, the products of the Krebs are: 4 CO2, 2 ATP, 6 NADH, and 2 FADH2 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  26. What is the importance of fermentation? Regenerates NAD+ to keep glycolysis going 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  27. How many total NADH molecules are made in cellular respiration? Where are they made? 10! 2 from glycolysis, 2 from the transition reactions, and 6 from the Krebs 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  28. Where does the Krebs cycle take place in prokaryotes? In eukaryotes? Prokaryotes – cytosol Eukaryotes – mitochondrial matrix 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  29. What is the total efficiency of cellular respiration? 39% 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  30. What is the chemical equation for cellular respiration? 6 O2 + C6H12O6 + ADP + PO4- → 6 CO2 + 6 H2O + ATP 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  31. For every NADH that is made, how many ATPs will be generated in the ETC? 3 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  32. Why is oxygen important in the ETC? It’s the final electron acceptor. 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  33. Describe how citric acid forms in the Krebs cycle. Acetyl-CoA (2C) combines with oxaloacetic acid (4C) to yield citric acid (6C) 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  34. What is the net yield of ATP in glycolysis? 2 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  35. Is fermentation aerobic or anaerobic? Anaerobic 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  36. Of the 38 ATPS, state where the ATPs are made in the process of cellular respiration and the numbers that are made in each process. Glycolysis = 2; Krebs cycle = 2; ETC = 34 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  37. What are the two main stages of cellular respiration? Glycolysis and aerobic respiration 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  38. What is glycolysis? Process in which glucose is converted into pyruvate producing a small amount of ATP and NADH 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  39. What are the major products of the Krebs and the ETC together? Carbon dioxide, water, and ATP 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  40. What are the products of ONE turn of the Krebs? 2 CO2, 1 ATP, 3 NADH, and 1 FADH2 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  41. How many ATPs are produced in cellular respiration? 38 ATPs 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  42. What gas produced during photosynthesis is necessary for the completion of cellular respiration in the ETC? oxygen 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  43. What molecules from the Krebs cycle donate electrons to the ETC? Is this oxidation or reduction? The 10 NADH and 2 FADH2; it’s oxidation (they’re losing electrons) 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  44. How many total ATPs are made in the ETC from all of the NADH produced in cellular respiration? 30 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  45. In which part of cellular respiration is most energy transferred to ATP? ETC 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  46. What are the steps of glycolysis? Phosphorylation of glucose to yield new 6C compound; 2 ATPS required Splitting of 6C compound to form 2 3C PGALS Oxidation of PGALS; phosphorylation of PGALS using 2 PO4- from cytosol to form 2 new 3C compounds; reduction of 2NAD+ to form 2 NADH and 2 H+ Removal of 4 PO4- from 2 3C compounds in step 3 to make pyruvate; 4 PO4- used to phosphorylate 4 ADPS making 4 ATPS 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  47. Does fermentation produce any ATP? No! 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  48. For every FADH2 that is made, how many ATPs will be generated in the ETC? 2 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  49. Where does glycolysis take place? In the cytosol 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

  50. How many ATPs are made in the ETC from the FADH2 produced in cellular respiration? 4 0 9 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 0 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 2 0 TIMER

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