Photosynthesis in Eukaryotes and Prokaryotes
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Questions and Answers

What is the main source of energy for chemoautotrophs?

  • Sunlight
  • Inorganic chemicals (correct)
  • Organic chemicals
  • CO2

    • Which characteristic is unique to anoxygenic photosynthesis?

  • Use of chlorophyll a
  • Aerobic environment
  • Production of oxygen
  • Use of bacteriochlorophyll a (correct)

    • What is the main difference between photoheterotrophs and photoautotrophs?

  • Production of oxygen
  • Source of energy
  • Use of chlorophyll
  • Source of carbon (correct)

    • How do chemoheterotrophs obtain energy?

    <p>From organic chemicals</p> Signup and view all the answers

    Which metabolic pathway involves fixing CO2 in Calvin-Benson cycle?

    <p>Calvin-Benson cycle</p> Signup and view all the answers

    What type of environment is most favorable for aerobic chemoheterotrophs?

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

    What distinguishes photoheterotrophs from photoautotrophs?

    <p>Photoheterotrophs use organic compounds as sources of carbon, while photoautotrophs fix CO2 to sugar.</p> Signup and view all the answers

    Which organisms use light energy to drive ATP production?

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

    How do chemoautotrophs obtain their energy?

    <p>From inorganic compounds</p> Signup and view all the answers

    What is a characteristic of chemoheterotrophs?

    <p>Use organic compounds as sources of carbon</p> Signup and view all the answers

    Which metabolic pathway involves the breakdown of complex molecules into simpler ones?

    <p><strong>Catabolism</strong></p> Signup and view all the answers

    In terms of energy use, what is the primary function of anabolism?

    <p><strong>Energy storage</strong></p> Signup and view all the answers

    What is the energy source for photoheterotrophs?

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

    Which group of organisms utilizes inorganic chemicals as their energy source and CO2 as their carbon source?

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

    What is the main difference between chemoheterotrophs and chemoautotrophs?

    <p>Energy source</p> Signup and view all the answers

    Which group of organisms can use light as their energy source but still require organic compounds as a carbon source?

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

    What is the relationship between anabolism and catabolism?

    <p>Anabolism builds molecules, catabolism breaks them down</p> Signup and view all the answers

    Which of the following types of organisms uses inorganic chemicals as both their energy and carbon source?

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

    Which type of reaction involves breaking down complex molecules to provide energy and building blocks for anabolism?

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

    What is the role of ATP in cellular metabolism?

    <p>It serves as an intermediate between catabolism and anabolism.</p> Signup and view all the answers

    In which type of reaction, energy is consumed to build complex molecules using building blocks?

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

    Which metabolic process breaks down nutrients to release energy and sustain life?

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

    What is the primary difference between catabolic and anabolic reactions?

    <p>The consumption or release of energy</p> Signup and view all the answers

    Which term best describes a reaction that releases energy as it breaks down complex molecules?

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

    What is the defining characteristic of amphibolic pathways?

    <p>They function in both anabolism and catabolism</p> Signup and view all the answers

    In the context of metabolic pathways, what are common intermediates?

    <p>Molecules that bridge anabolism and catabolism</p> Signup and view all the answers

    What is the primary function of anabolism in terms of energy utilization?

    <p>To consume ATP for building complex molecules</p> Signup and view all the answers

    What role do enzymes play in metabolic pathways?

    <p>Enzymes speed up reactions by lowering activation energy</p> Signup and view all the answers

    Which term best describes metabolic pathways that involve both building and breaking down molecules?

    <p>Amphibolic pathways</p> Signup and view all the answers

    What is the key function of catabolic pathways in metabolism?

    <p>To break down complex molecules to release energy</p> Signup and view all the answers

    Which group of organisms can use inorganic chemicals as their energy source and CO2 as their carbon source?

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

    What is the primary function of catabolism in metabolism?

    <p>Release energy through the breakdown of complex molecules</p> Signup and view all the answers

    In which metabolic pathway is CO2 fixed during the Calvin-Benson cycle?

    <p>Calvin cycle</p> Signup and view all the answers

    What is the primary role of anabolism in metabolism?

    <p>Build complex molecules from simple ones</p> Signup and view all the answers

    Which group of organisms uses light energy for ATP production?

    <p>Green bacteria</p> Signup and view all the answers

    How do chemoheterotrophs derive their energy?

    <p>From breaking down complex organic molecules</p> Signup and view all the answers

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