Unique Photosynthetic Pigment Quiz

52 Questions | Total Attempts: 97

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Organism Quizzes & Trivia

Photosynthesis is the process through which plants use sunlight to get nutrients from carbon dioxide and water. The pigment that is present in chloroplasts that captures the light energy necessary for photosynthesis is what referred to as a photosynthesis pigment is. The quiz below is designed to test out how much you know about this pigment. Give it a shot and see how high you score and keep an eye out for more quizzes.


Questions and Answers
  • 1. 
    If photosynthesising green algae are provided with CO2 synthesised with heavy oxygen (18O), later analysis will show that all but one of the following compounds produced by the algae contain the 18O label. That one is
    • A. 

      RuBP

    • B. 

      Glucose

    • C. 

      PGAL.

    • D. 

      PGA.

    • E. 

      O2.

  • 2. 
    Which of the following are products of the light reactions of photosynthesis that are utilised in the Calvin cycle?
    • A. 

      ATP and NADPH

    • B. 

      Electrons and H+

    • C. 

      CO2 and glucose

    • D. 

      H2O and O2

    • E. 

      ADP, Pi, and NADP+

  • 3. 
    What are the products of the light reactions that are subsequently used by the Calvin cycle?
    • A. 

      Oxygen and carbon dioxide

    • B. 

      Water and carbon

    • C. 

      Carbon dioxide and RuBP

    • D. 

      Electrons and photons

    • E. 

      ATP and NADPH

  • 4. 
    Where does the Calvin cycle take place?
    • A. 

      Cytoplasm surrounding the chloroplast

    • B. 

      Outer membrane of the chloroplast

    • C. 

      Chlorophyll molecule

    • D. 

      Thylakoid membrane

    • E. 

      Stroma of the chloroplast

  • 5. 
    In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary?
    • A. 

      Photosynthesisers

    • B. 

      Autotrophs and heterotrophs

    • C. 

      Producers and primary consumers

    • D. 

      Green plants

    • E. 

      Autotrophs

  • 6. 
    In autotrophic bacteria, where are the enzymes located that can carry on organic synthesis?
    • A. 

      Free in the cytosol

    • B. 

      Chloroplast membranes

    • C. 

      Along the inner surface of the plasma membrane

    • D. 

      Nuclear membranes

    • E. 

      Along the outer edge of the nucleoid

  • 7. 
    When oxygen is released as a result of photosynthesis, it is a by-product of which of the following?
    • A. 

      The electron transfer system of photosystem I

    • B. 

      Splitting the water molecules

    • C. 

      Reducing NADP+

    • D. 

      Chemiosmosis

    • E. 

      The electron transfer system of photosystem II

  • 8. 
    A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are being absorbed by this pigment?
    • A. 

      Blue and violet

    • B. 

      Green, blue, and yellow

    • C. 

      Red and yellow

    • D. 

      Blue, green, and red

    • E. 

      Green and yellow

  • 9. 
     In the thylakoid membranes, what is the main role of the antenna pigment molecules?
    • A. 

      Harvest photons and transfer light energy to the reaction-center chlorophyll

    • B. 

      Concentrate photons within the stroma

    • C. 

      Synthesis ATP from ADP and Pi

    • D. 

      Transfer electrons and ferrodoxin and then NADPH

    • E. 

      Split water and release oxygen to the reaction-center chorophyll

  • 10. 
    The reaction-center chlorophyll of photosystem I is known as P700 because
    • A. 

      It absorbs 700 photons per microsecond.

    • B. 

      There are 700 photosystem I components to each chloroplast.

    • C. 

      This pigment is best at absorbing light with a wavelength of 700 nm.

    • D. 

      There are 700 chlorophyll molecules in the center.

    • E. 

      The plastoquinone reflects light with a wavelength of 700 nm.

  • 11. 
    Which of the events listed below occur in the light reactions of photosynthesis?
    • A. 

      NADPH is reduced to NADP+.

    • B. 

      NADP is produced.

    • C. 

      Light is absorbed and funneled to reaction-center chlorophyll a.

    • D. 

      Carbon dioxide is incorporated into PGA.

    • E. 

      ATP is phosphorylated to yield ADP.

  • 12. 
    Which statement describes the functioning of photosystem II?
    • A. 

      The electron vacancies in P680 are filled by electrons derived from water.

    • B. 

      The excitation is passed along to a molecule of P700 chlorophyll in the photosynthetic unit.

    • C. 

      Light energy excites electrons in the electron transport chain in a photosynthetic unit.

    • D. 

      The splitting of water yields molecular carbon dioxide as a by-product.

    • E. 

      The P680 chlorophyll donates a pair of protons to NADPH, which is thus converted to NADP+.

  • 13. 
    Which of the following are directly associated with photosystem I?
    • A. 

      Receiving electrons from plastocyanin

    • B. 

      P680 reaction-center chlorophyll

    • C. 

      Extraction of hydrogen electrons from the splitting of water

    • D. 

      Harvesting of light energy by ATP

    • E. 

      Passing electrons to plastoquinone

  • 14. 
    Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be
    • A. 

      To do experiments to generate an action spectrum.

    • B. 

      To test for liberation of O2 in the light.

    • C. 

      To test for CO2 fixation in the dark.

    • D. 

      To test for production of either sucrose or starch.

    • E. 

      To determine if they have thylakoids in the chloroplasts.

  • 15. 
    What are the products of linear photophosphorylation?
    • A. 

      P700 and P680

    • B. 

      Heat and fluorescence

    • C. 

      ATP and NADPH

    • D. 

      ATP and P700

    • E. 

      ADP and NADP

  • 16. 
    As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find 30,000 molecules of ATP consumed, but only 20,000 molecules of NADPH. Where did the extra ATP molecules come from?
    • A. 

      Chlorophyll

    • B. 

      Photosystem II

    • C. 

      Linear electron flow

    • D. 

      Cyclic electron flow

    • E. 

      Photosystem I

  • 17. 
    Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damage will have the most direct effect on which of the following processes?
    • A. 

      The splitting of water

    • B. 

      The flow of electrons from photosystem II to photosystem I

    • C. 

      The reduction of NADP+

    • D. 

      The absorption of light energy by chlorophyll

    • E. 

      The synthesis of ATP

  • 18. 
    What does the chemiosmotic process in chloroplasts involve?
    • A. 

      Establishment of a proton gradient

    • B. 

      Reduction of water to produce ATP energy

    • C. 

      Diffusion of electrons through the thylakoid membrane

    • D. 

      Movement of water by osmosis into the thylakoid space from the stroma

    • E. 

      Formation of glucose, using carbon dioxide, NADPH, and ATP

  • 19. 
    Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then transferred in the dark to a pH-8 solution. What would be likely to happen?
    • A. 

      The isolated chloroplasts will make ATP.

    • B. 

      Cyclic photophosphorylation will occur.

    • C. 

      The Calvin cycle will be activated.

    • D. 

      Only A and B will occur.

    • E. 

      A, B and C will occur.

  • 20. 
    In a plant cell, where are the ATP synthase complexes located?
    • A. 

      Inner mitochondrial membrane

    • B. 

      Plasma membrane

    • C. 

      Thylakoid membrane

    • D. 

      A and C

    • E. 

      A, B and C

  • 21. 
    In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis translocates protons from
    • A. 

      The intermembrane space to the matrix.

    • B. 

      The stroma to the thylakoid space.

    • C. 

      The stroma to the photosystem II.

    • D. 

      The matrix to the stroma.

    • E. 

      ATP synthase to NADP+ reductase.

  • 22. 
    Which of the following statements best describes the relationship between photosynthesis and respiration?
    • A. 

      Photosynthesis stores energy in complex organic molecules, while respiration releases it.

    • B. 

      Respiration is anabolic and photosynthesis is catabolic.

    • C. 

      Respiration is the reversal of the biochemical pathways of photosynthesis.

    • D. 

      ATP molecules are produced in photosynthesis and used up in respiration.

    • E. 

      Photosynthesis occurs only in plants and respiration occurs only in animals.

  • 23. 
    Where are the molecules of the electron transport chain found in plant cells?
    • A. 

      Inner membrane of mitochondria

    • B. 

      Stroma of chloroplast

    • C. 

      Matrix of mitochondria

    • D. 

      Thylakoid membranes of chloroplasts

    • E. 

      Cytoplasm

  • 24. 
    Synthesis of ATP by the chemiosmotic mechanism occurs during
    • A. 

      Both photosynthesis and respiration.

    • B. 

      Respiration.

    • C. 

      Photorespiration.

    • D. 

      Neither photosynthesis nor respiration.

    • E. 

      Photosynthesis.

  • 25. 
    Reduction of oxygen which forms water occurs during
    • A. 

      Photosynthesis

    • B. 

      Both photosynthesis and respiration.

    • C. 

      Neither photosynthesis nor respiration.

    • D. 

      Respiration.

    • E. 

      Photorespiration.

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