Life on Earth

Chapter 8
Harvesting Energy from Food: Glycolysis and Cellular Respiration
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Self-Quiz

  1. Where does glycolysis occur?
    1. cytoplasm
    2. matrix of mitochondria
    3. inner membrane of mitochondria
    4. outer membrane of mitochondria
    5. chloroplast stroma

  2. Where does respiratory electron transport occur?
    1. cytoplasm
    2. matrix of mitochondria
    3. inner membrane of mitochondria
    4. outer membrane of mitochondria
    5. chloroplast stroma

  3. What are the economically important products of the fermentation of grape juice by yeast that are essential for the manufacture of champagne?
    1. lactic acid and NAD+
    2. ATP and CO2
    3. ATP and ethanol
    4. CO2 and ethanol
    5. only the French know

  4. The majority of ATP produced in aerobic respiration comes from
    1. glycolysis
    2. the citric acid cycle
    3. the electron transport system
    4. fermentation
    5. reverse osmosis

  5. The process that converts glucose (6 C) into two molecules of pyruvate (3 C) is
    1. glycolysis
    2. fermentation
    3. the citric acid cycle
    4. respiratory electron transport
    5. the Calvin-Benson cycle

  6. The process that converts pyruvate (3 C) into three molecules of CO2 is
    1. glycolysis
    2. fermentation
    3. the citric acid cycle
    4. respiratory electron transport
    5. the Calvin-Benson cycle

  7. During glycolysis, what provides the initial energy of activation so that ATP production is possible?
    1. ATP
    2. pyruvic acid
    3. PGAL
    4. NADH
    5. glucose

  8. At the end of glycolysis, the original carbons of the glucose molecule form
    1. six molecules of carbon dioxide
    2. two molecules of NADH
    3. two molecules of pyruvic acid
    4. two molecules of citric acid
    5. two molecules of PGAL

  9. During glycolysis, what is the net gain of ATP molecules produced?
    1. 2
    2. 4
    3. 34
    4. 36
    5. 38

  10. Strenuous exercise increases CO2 production. Specifically, where is the CO2 coming from?
    1. glycolysis
    2. C3 cycle
    3. matrix reactions
    4. chemiosmosis
    5. fermentation

  11. The electron transport chain receives electrons directly from
    1. NADH
    2. FADH2
    3. NADH2
    4. a and b
    5. all of these

  12. The final electron acceptor in cellular respiration is
    1. ATP
    2. NADH
    3. carbon dioxide
    4. oxygen
    5. FADH2

  13. According to the chemiosmotic theory, ATP is synthesized when H+ leaves the intermembrane compartment and enters the mitochondrial matrix by
    1. osmosis
    2. simple diffusion
    3. facilitated diffusion
    4. active transport
    5. exocytosis

  14. Which of the following has the greatest amount of energy per gram weight?
    1. minerals
    2. proteins
    3. vitamins
    4. fats
    5. carbohydrates

  15. The cristae of the mitochondria can be compared functionally to the thylakoid membranes of the chloroplast because both contain a system for
    1. enzyme synthesis
    2. PGAL production
    3. glucose synthesis
    4. anaerobic respiration
    5. electron transport

      


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