Biology Chapter 6 & 7

20 Questions | Total Attempts: 82

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Biology Chapter Quizzes & Trivia

Questions and Answers
  • 1. 
    Glycolysis takes place
    • A. 

      In the cytosol

    • B. 

      In the mitochondria

    • C. 

      Only if oxygen is present

    • D. 

      Only if oxyggen is absent

  • 2. 
    During glycolysis, glucose is
    • A. 

      Produced from two molecules of pyruvic acid

    • B. 

      Converted into two molecules of ATP

    • C. 

      Partially broken down and some of its stored energy is released

    • D. 

      Partially broken down and its stored energy is increased

  • 3. 
    Both lactic acid fermentation and alcoholic fermentation produce
    • A. 

      A two- carbon molecule from a six- carbon molecules

    • B. 

      CO2 from a three- carbon molecule

    • C. 

      ATP from ADP and phosphate

    • D. 

      NAD+ from NADH and H+

  • 4. 
    The efficiency of glycolysis is approximately
    • A. 

      0.2%

    • B. 

      2%

    • C. 

      20%

    • D. 

      200%

  • 5. 
    The anaerobic pathways provide enough energy to meet all of the energy needs of
    • A. 

      All organisms

    • B. 

      All unicellular and most multicellular organisms

    • C. 

      Many unicellular and some multicellular organisms

    • D. 

      No organisms

  • 6. 
    The breakdown product of glucose that difuses into the mitochondrial matrix for further breakdown is
    • A. 

      Acetyl CoA

    • B. 

      Pyruvic acid

    • C. 

      Oxaloacetic acid

    • D. 

      Citric acid

  • 7. 
    The starting substance of the kreb's cycle, which is regenerated at the end of the cycle, is
    • A. 

      Acetyl CoA

    • B. 

      Pyruvic acid

    • C. 

      Oxaloacetic acid

    • D. 

      Citric acid

  • 8. 
    The Krebs cycle
    • A. 

      Produces two molecules of CO2

    • B. 

      Produces a six carbon molecule from six molecules of CO2

    • C. 

      Produces NAD+ from NADH and H+

    • D. 

      Generates most of the ATP produced in aerobic respiration

  • 9. 
    The electron transport chain of aerobic respiration
    • A. 

      Generates O2 from H2O

    • B. 

      Produces NADH by chemiosmosis

    • C. 

      Pumps electrons into the mitochondrial matrix

    • D. 

      Pumps protons into the space between the inner and outer mitochondrial membranes

  • 10. 
    The maximum efficiency of aerobic respiration is approximately
    • A. 

      0.39%

    • B. 

      3.9%

    • C. 

      39%

    • D. 

      390%

  • 11. 
    Chlorophyll a
    • A. 

      Absorbs mostly orange- red and blue- violet light

    • B. 

      Absorbs mostly green light

    • C. 

      Is an accessory pigment

    • D. 

      Is responsible for the red color of many autumn leaves

  • 12. 
    The photosystem and electron transport chains are located in the
    • A. 

      Outer chloroplast membrane

    • B. 

      Inner chloroplast membrane

    • C. 

      Thylakoid membrane

    • D. 

      Stroma

  • 13. 
    Both photosystem I and photosystem II
    • A. 

      Receive electrons from other photosystems

    • B. 

      Donate electrons to a transport chain that generates NADPH

    • C. 

      Donate protons to each other

    • D. 

      Contain chlorophyll a molecules

  • 14. 
    Water participates directly in the light reactions of photosynthesis by
    • A. 

      Donating electrons to NADPH

    • B. 

      Donating electrons to photosystem II

    • C. 

      Accepting electrons from the electron transport chains

    • D. 

      Accepting electrons from ADP

  • 15. 
    The energy that is used to establish the proton gradient across the thylakoid membrane comes from the
    • A. 

      Synthesis of ATP

    • B. 

      Synthesis of NADPH

    • C. 

      Passage of electrons along the electron transport chain of photosystem II

    • D. 

      Splitting of water

  • 16. 
    The Calving cycle begins when CO2 combines with a five carbon carbohydrate called
    • A. 

      RuBP

    • B. 

      PGA

    • C. 

      3- G3P

    • D. 

      NADPH

  • 17. 
    For every three molecules of CO2 that enter the calvin cycle, the cycle produces six molecules
    • A. 

      RuBP

    • B. 

      ATP

    • C. 

      3- PGA

    • D. 

      NADPH

  • 18. 
    Organic compounds that can be made from the products of the calvin cycle include
    • A. 

      Only carbohydrates

    • B. 

      Only amino acids

    • C. 

      Only lipids

    • D. 

      Carbohydrates, amino acids, and lipids

  • 19. 
    C3 and C4 plants differ in terms of the number of 
    • A. 

      Steps in the calvin cycle

    • B. 

      Carbon atoms in the compound that CO2 is initially incorporated into

    • C. 

      Carbon atoms in the end product of the calvin cycle

    • D. 

      ATP molecules used in the calvin cycle

  • 20. 
    As light intensity increases, the rate of photosynthesis
    • A. 

      Continues to decrease

    • B. 

      Continues to increase

    • C. 

      Initially decreases and then levels off

    • D. 

      Initially increases and then levels off

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