Photosynthesis and Its Importance
60 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary source of energy for life on earth?

  • Photosynthesis
  • Energy from the earth's core
  • Energy derived from the sun (correct)
  • Atmospheric oxygen

    • What is the annual rate of sugar fixation through photosynthesis?

  • 500 billion tonnes
  • 100 billion tonnes
  • 250 billion tonnes (correct)
  • 200 billion tonnes

    • What is the byproduct of photosynthesis that is responsible for the rise of atmospheric oxygen?

  • H2O
  • O2 (correct)
  • CO2
  • CHO

    • What is the primary source of food for humans and animals?

    <p>Plants only</p> Signup and view all the answers

    What is the process by which organisms can harvest energy from the sun?

    <p>Photosynthesis</p> Signup and view all the answers

    What is the source of the therapeutic drug aspirin?

    <p>Bark of willow trees</p> Signup and view all the answers

    What is the term for the process by which organisms can survive for extended periods without eating?

    <p>Endosymbiosis</p> Signup and view all the answers

    What is the key component of the light reactions in photosynthesis?

    <p>All of the above</p> Signup and view all the answers

    What is the pigment responsible for absorbing light that powers photosynthesis?

    <p>Chlorophyll a</p> Signup and view all the answers

    What is the organelle in which photosynthesis takes place?

    <p>Chloroplast</p> Signup and view all the answers

    What is the primary function of the proton gradient in photosynthesis?

    <p>To drive the ATP synthase to generate ATP</p> Signup and view all the answers

    What is the purpose of switching photosystem 1 into cyclic mode?

    <p>To generate more ATP without producing NADPH</p> Signup and view all the answers

    What is the significance of cyclic photophosphorylation in C4 plants?

    <p>It provides an ATP source in the bundle sheath chloroplasts</p> Signup and view all the answers

    What is the primary function of rubisco in photosynthesis?

    <p>To fix carbon dioxide</p> Signup and view all the answers

    What is the consequence of rubisco fixing oxygen instead of carbon dioxide?

    <p>Photorespiration</p> Signup and view all the answers

    What is the role of malate or aspartate in C4 plants?

    <p>To shuttle CO2 from mesophyll cells to bundle sheath cells</p> Signup and view all the answers

    What is the characteristic of CAM plants that helps them conserve water?

    <p>Closed stomata during the day</p> Signup and view all the answers

    What is the function of carbonic anhydrases in algae?

    <p>To facilitate inorganic carbon uptake</p> Signup and view all the answers

    What is the primary difference between C4 and CAM plants?

    <p>C4 plants shuttle CO2, while CAM plants store CO2 as malic acid</p> Signup and view all the answers

    What is the result of the electron transport chain in photosynthesis?

    <p>Production of oxygen</p> Signup and view all the answers

    What is the role of carotenoids in photosynthesis?

    <p>To pass absorbed light energy to chlorophyll a and provide photo protection</p> Signup and view all the answers

    What is the result of the oxygen evolving complex catalysing the splitting of two water molecules?

    <p>H2O = H+ + O2 + 4E-</p> Signup and view all the answers

    What is the process by which PS1 can generate more ATP without producing NADPH?

    <p>Cyclic electron flow</p> Signup and view all the answers

    What is the primary function of the proton gradient in photosynthesis?

    <p>To drive the ATP synthase to generate ATP</p> Signup and view all the answers

    What is the purpose of the electron transport chain in photosynthesis?

    <p>To generate ATP and NADPH</p> Signup and view all the answers

    What is the type of photosynthesis used by some C4 plants?

    <p>C4 pathway</p> Signup and view all the answers

    What is the net equation of photosynthesis?

    <p>CO2 + H2O = CHO + O2</p> Signup and view all the answers

    What is the result of rubisco fixing oxygen instead of carbon dioxide?

    <p>Photorespiration</p> Signup and view all the answers

    What is the process by which algae take up inorganic carbon?

    <p>Inorganic carbon uptake system</p> Signup and view all the answers

    What is the role of chlorophyll a in photosynthesis?

    <p>To absorb light energy and power photosynthesis</p> Signup and view all the answers

    What is the primary role of photosynthesis in the global carbon cycle?

    <p>To fix carbon dioxide into organic compounds</p> Signup and view all the answers

    What is the annual rate of sugar fixation by photosynthesis?

    <p>250 billion tonnes</p> Signup and view all the answers

    Which of the following organisms is an example of endosymbiosis?

    <p>Green marine sea slugs</p> Signup and view all the answers

    What is the primary source of energy for the production of therapeutic drugs such as Vinblastine and Vincristine?

    <p>Plants</p> Signup and view all the answers

    What is the byproduct of photosynthesis that is responsible for the rise of atmospheric oxygen?

    <p>Oxygen</p> Signup and view all the answers

    What is the key component of the light reactions that absorbs light energy?

    <p>Pigments</p> Signup and view all the answers

    What is the primary function of the chloroplast in photosynthesis?

    <p>To absorb light energy</p> Signup and view all the answers

    What is the role of photosynthesis in the production of food for humans and animals?

    <p>To produce glucose</p> Signup and view all the answers

    What is the consequence of the rise of atmospheric oxygen due to photosynthesis?

    <p>The possibility of aerobic respiration</p> Signup and view all the answers

    What is the primary function of photosynthesis in the ecosystem?

    <p>To provide energy for living organisms</p> Signup and view all the answers

    What is the energy fate that involves the transfer of energy from a negative charged high-energy electron to another nearby molecule?

    <p>Transferring energy from a negative charged high-energy electron to another nearby molecule</p> Signup and view all the answers

    What is the pigment that absorbs light in the blue-violet range, passes absorbed light energy to chlorophyll a, and provides photo protection?

    <p>Carotenoids</p> Signup and view all the answers

    What is the process by which the proton gradient drives the ATP synthase to generate ATP?

    <p>Electron transport chain</p> Signup and view all the answers

    What is the function of the oxygen evolving complex in photosynthesis?

    <p>Catalysing the splitting of two water molecules</p> Signup and view all the answers

    What is the term for the process by which some organisms can survive for extended periods without eating?

    <p>Kleptoplasty</p> Signup and view all the answers

    What is the source of energy for life on earth?

    <p>Photosynthesis</p> Signup and view all the answers

    What is the pigment responsible for absorbing light that powers photosynthesis in plants, algae, and cyanobacteria?

    <p>Chlorophyll a</p> Signup and view all the answers

    What is the byproduct of photosynthesis that is responsible for the rise of atmospheric oxygen?

    <p>O2</p> Signup and view all the answers

    What is the process by which organisms can harvest energy from the sun?

    <p>Photosynthesis</p> Signup and view all the answers

    What is the organelle in which photosynthesis takes place?

    <p>Chloroplast</p> Signup and view all the answers

    What is the primary role of the proton gradient in photosynthesis?

    <p>To drive the ATP synthase to generate ATP</p> Signup and view all the answers

    What is the outcome of the coupling of PS2 and PS1?

    <p>Boosting of electrons to produce NADPH</p> Signup and view all the answers

    What is the significance of cyclic photophosphorylation in C4 plants?

    <p>It generates ATP</p> Signup and view all the answers

    What is the result of rubisco fixing oxygen instead of carbon dioxide?

    <p>Photorespiration</p> Signup and view all the answers

    What is the role of carbonic anhydrases in algae?

    <p>To facilitate inorganic carbon uptake</p> Signup and view all the answers

    What is the primary function of malate or aspartate in C4 plants?

    <p>To shuttle CO2 from mesophyll cells to bundle sheath cells</p> Signup and view all the answers

    What is the characteristic of CAM plants that helps them conserve water?

    <p>Stomata remain shut during the day</p> Signup and view all the answers

    What is the primary difference between C4 and CAM plants?

    <p>C4 plants have a different mechanism of CO2 fixation</p> Signup and view all the answers

    What is the outcome of the electron transport chain in photosynthesis?

    <p>Generation of ATP</p> Signup and view all the answers

    What is the role of the proton gradient in cyclic electron flow?

    <p>To generate ATP</p> Signup and view all the answers

    More Like This

    Photosynthesis Factors Quiz
    17 questions

    Photosynthesis Factors Quiz

    MiraculousTiger avatar
    MiraculousTiger
    Photosynthesis Reactants Flashcards
    10 questions

    Photosynthesis Reactants Flashcards

    ModestClarity avatar
    ModestClarity
    Photosynthesis Quiz Flashcards
    17 questions

    Photosynthesis Quiz Flashcards

    DetachableHydra avatar
    DetachableHydra
    Photosynthesis Essentials
    8 questions

    Photosynthesis Essentials

    DecisiveOpossum avatar
    DecisiveOpossum
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser