Photosynthesis and Consumer Organisms Quiz
29 Questions
0 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 major site of photosynthesis in most plants?

  • Stems
  • Flowers
  • Roots
  • Leaves (correct)

    • Which organisms utilize the energy of sunlight to make organic molecules from H2O and CO2?

  • Purple sulfur bacteria
  • Cyanobacteria (correct)
  • Fungi
  • Animals

    • What is the function of phycobilisomes in cyanobacteria?

  • Facilitate respiration
  • Store carbon dioxide
  • Convert light energy to chemical energy
  • Absorb sunlight for photosynthesis (correct)

    • Which prokaryotic organism has a thylakoid membrane with phycobilisomes attached to it?

    <p>Purple sulfur bacteria</p> Signup and view all the answers

    How many chloroplasts are there approximately per square millimeter of leaf surface?

    <p>50,000</p> Signup and view all the answers

    Where does photosynthesis occur in cyanobacteria?

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

    What generates the proton (H+) gradient in the linear flow of electrons?

    <p>Splitting of water by PS II</p> Signup and view all the answers

    What drives ATP synthesis in the stroma during the linear flow of electrons?

    <p>Diffusion of H+ through ATP synthase</p> Signup and view all the answers

    In the cyclic flow of electrons, what happens when no NADP+ is returned from the Calvin cycle?

    <p>High energy electrons shunt into an alternate pathway</p> Signup and view all the answers

    What do light reactions primarily generate?

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

    What is the main function of the Calvin cycle?

    <p>Builds sugar from smaller molecules</p> Signup and view all the answers

    Is the Calvin cycle primarily anabolic or catabolic?

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

    What is the main purpose of the Calvin cycle?

    <p>Convert CO2 to sugar</p> Signup and view all the answers

    In the Calvin cycle, what is the function of RUBISCO?

    <p>Catalyze the addition of CO2 to RuBP</p> Signup and view all the answers

    How many molecules of G3P are produced in the Calvin cycle?

    <p>1</p> Signup and view all the answers

    Which enzyme is responsible for the conversion of CO2 to sugar in the Calvin cycle?

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

    What is the product of the initial step in the Calvin cycle where CO2 is added to RuBP?

    <p>6-carbon molecule</p> Signup and view all the answers

    How is G3P produced in the Calvin cycle?

    <p>Through phosphorylation of 3-PGA using NADPH</p> Signup and view all the answers

    What happens to P700 when it gets excited by light energy?

    <p>It becomes oxidized (P700+)</p> Signup and view all the answers

    What is the role of the enzyme NADP+ reductase in the linear electron flow?

    <p>Catalyzes the transfer of electrons to NADP+</p> Signup and view all the answers

    What is the function of the second electron transport chain after PSI in linear electron flow?

    <p>Reduces NADPH to NADP+</p> Signup and view all the answers

    How many electrons are required for the reduction of NADP+ to NADPH?

    <p>Two electrons</p> Signup and view all the answers

    Which process contributes to the generation of the H+ gradient in the stroma during linear electron flow?

    <p>Removal of an H+ atom</p> Signup and view all the answers

    What is the main difference between the second electron transport chain after PSI and the primary electron acceptor of PS I?

    <p>One transfers electrons without creating a proton gradient</p> Signup and view all the answers

    How many molecules of G3P are produced for every six triose phosphate molecules?

    <p>5 molecules of G3P</p> Signup and view all the answers

    What is the main role of Ribulose biphosphate (RuBP) in the Calvin cycle?

    <p>Regenerate RuBP</p> Signup and view all the answers

    How many steps in the Calvin cycle are dedicated to the regeneration of RuBP?

    <p>12 steps</p> Signup and view all the answers

    What is the purpose of fixing CO2 in the Calvin cycle?

    <p>Synthesize glucose and other sugars</p> Signup and view all the answers

    How many CO2 molecules need to be fixed in the Calvin cycle to produce a molecule of glucose?

    <p>9 molecules of CO2</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser