Unit 5 Test Rebate

25 Questions

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Unit 5 Test Rebate

Questions and Answers
  • 1. 
    The three-carbon molecule formed by glycolysis is ___.
    • A. 

      Pyruvate

    • B. 

      NADH

    • C. 

      Citric acid

    • D. 

      Carbon dioxide

  • 2. 
    In the diagram to the right, what is structure A?
    • A. 

      Folded inner membrane

    • B. 

      Mitochondrial matrix

    • C. 

      Stroma

    • D. 

      Thylakoid membrane

  • 3. 
    In the diagram to the right, what is structure B?
    • A. 

      Folded inner membrane

    • B. 

      Mitochondrial matrix

    • C. 

      Stroma

    • D. 

      Thylakoid membrane

  • 4. 
    Which of the following stages occurs in the mitochondrial matrix?
    • A. 

      Krebs cycle

    • B. 

      The Calvin cycle

    • C. 

      Glycolysis

    • D. 

      Oxidative phosphorylation

  • 5. 
    Which organelle converts molecules from the food you eat into usable energy?
    • A. 

      Golgi apparatus

    • B. 

      Chloroplast

    • C. 

      Mitochondrion

    • D. 

      Lysosome

  • 6. 
    In the electron transport chain, hydrogen ions are pumped across the mitochondrial membrane. What provides the energy to operate the protein pumps?
    • A. 

      Electrons

    • B. 

      ATP

    • C. 

      Oxygen

    • D. 

      Carbon dioxide

  • 7. 
    What enzyme is located at the end of the electron transport chain?
    • A. 

      ATP synthase

    • B. 

      Dehydrogenase

    • C. 

      NADPH

    • D. 

      Glycolase

  • 8. 
    The electron transport chain produces water and ATP. Where do the hydrogen atoms come from that are used to form water?
    • A. 

      Carbon dioxide

    • B. 

      NADH and FADH2

    • C. 

      The Calvin Cycle

    • D. 

      Oxygen

  • 9. 
    Two products of the Krebs cycle are
    • A. 

      Water and carbon dioxide.

    • B. 

      ATP and carbon dioxide.

    • C. 

      ATP and oxygen.

    • D. 

      ADP and water.

  • 10. 
    The part of cellular respiration in which glucose is broken down is called
    • A. 

      Photosynthesis.

    • B. 

      Aerobic respiration.

    • C. 

      Electron transport.

    • D. 

      Glycolysis.

  • 11. 
    What is the main function of the Krebs cycle?
    • A. 

      Breaking down pyruvate molecules to form molecules of NADH and oxygen

    • B. 

      Forming citric acid to make NADH, water, and carbon dioxide

    • C. 

      Producing molecules that carry high-energy electrons to the electron transport chain

    • D. 

      Bonding coenzyme A to pyruvate

  • 12. 
    In the electron transport chain, energy from the Krebs cycle is used to pump hydrogen ions
    • A. 

      Across the inner mitochondrial membrane.

    • B. 

      Through the ATP synthase enzyme in the mitochondrial matrix.

    • C. 

      Along a concentration gradient in the thylakoid.

    • D. 

      Along the thylakoid membrane.

  • 13. 
    Which process breaks down sugars to make ATP when oxygen is present?
    • A. 

      Anaerobic respiration

    • B. 

      Cellular respiration

    • C. 

      Glycolysis

    • D. 

      Photosynthesis

  • 14. 
    Where does glycolysis take place?
    • A. 

      Cytoplasm

    • B. 

      Mitochondrial matrix

    • C. 

      Mitochondrial inner membrane

    • D. 

      Chloroplast

  • 15. 
    Which of the following are end products of glycolysis?
    • A. 

      Two three-carbon molecules, ATP, and NAD+

    • B. 

      Carbon dioxide, water, and ATP

    • C. 

      NAD+, oxygen, and two ATP molecules

    • D. 

      Pyruvate, NADH, and ATP

  • 16. 
    In the diagram to the right, the structure labeled E is the ___.
    • A. 

      Stroma

    • B. 

      Chlorophyll

    • C. 

      Granum

    • D. 

      Thylakoid membranes

  • 17. 
    In the diagram to the right, the structure labeled C is the ___.
    • A. 

      Stroma

    • B. 

      Chlorophyll

    • C. 

      Granum

    • D. 

      Thylakoid membranes

  • 18. 
    In the diagram to the right, the structure labeled D is the ___.
    • A. 

      Stroma

    • B. 

      Chlorophyll

    • C. 

      Granum

    • D. 

      Thylakoid membranes

  • 19. 
    The purpose of the light reactions is to___.
    • A. 

      Make ATP and NADPH for use in the Calvin cycle

    • B. 

      To make oxygen

    • C. 

      To split water

    • D. 

      To make glucose

  • 20. 
    What are the products of photosynthesis?
    • A. 

      Carbon dioxide and water

    • B. 

      Glucose and oxygen

    • C. 

      Water and glucose

    • D. 

      Carbon dioxide and oxygen

  • 21. 
    Which of the following statements best describes the process of photosynthesis?
    • A. 

      Plants use oxygen to make simple sugars.

    • B. 

      Chlorophyll builds sugars in the thylakoid membrane.

    • C. 

      Light breaks down water molecules and releases carbon dioxide.

    • D. 

      Chloroplasts absorb sunlight and store chemical energy.

  • 22. 
    The main light-absorbing molecules found in plant leaves are called
    • A. 

      Chloroplasts

    • B. 

      Thylakoids

    • C. 

      Chlorophyll

    • D. 

      Grana

  • 23. 
    Which phrase best describes the electron transport chain in photosynthesis?
    • A. 

      A chain of photosynthetic proteins located in the stroma

    • B. 

      A collection of enzymes used to make ADP

    • C. 

      A series of proteins located in the thylakoid membrane

    • D. 

      A group of enzymes that carries energy to the Calvin cycle

  • 24. 
    Which of the following takes place in the light-dependent reactions of photosynthesis?
    • A. 

      Sugars are made.

    • B. 

      Energy is captured.

    • C. 

      Chlorophyll is pumped.

    • D. 

      Carbon dioxide is formed.

  • 25. 
    Which process breaks down sugars to make ATP when oxygen is NOT present?
    • A. 

      Anaerobic respiration (a.k.a. Fermentation)

    • B. 

      Cellular respiration

    • C. 

      Glycolysis

    • D. 

      Photosynthesis