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 (D)</p> Signup and view all the answers

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

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

What type of environment is most favorable for aerobic chemoheterotrophs?

<p>Aerobic (C)</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. (B)</p> Signup and view all the answers

Which organisms use light energy to drive ATP production?

<p>Photoautotrophs (C)</p> Signup and view all the answers

How do chemoautotrophs obtain their energy?

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

What is a characteristic of chemoheterotrophs?

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

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

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

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

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

What is the energy source for photoheterotrophs?

<p>Light (B)</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 (D)</p> Signup and view all the answers

What is the main difference between chemoheterotrophs and chemoautotrophs?

<p>Energy source (D)</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 (C)</p> Signup and view all the answers

What is the relationship between anabolism and catabolism?

<p>Anabolism builds molecules, catabolism breaks them down (C)</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 (D)</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 (B)</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. (C)</p> Signup and view all the answers

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

<p>Anabolic (C)</p> Signup and view all the answers

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

<p>Glycolysis (B)</p> Signup and view all the answers

What is the primary difference between catabolic and anabolic reactions?

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

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

<p>Exothermic (D)</p> Signup and view all the answers

What is the defining characteristic of amphibolic pathways?

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

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

<p>Molecules that bridge anabolism and catabolism (D)</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 (A)</p> Signup and view all the answers

What role do enzymes play in metabolic pathways?

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

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

<p>Amphibolic pathways (B)</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 (D)</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 (B)</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 (D)</p> Signup and view all the answers

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

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

What is the primary role of anabolism in metabolism?

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

Which group of organisms uses light energy for ATP production?

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

How do chemoheterotrophs derive their energy?

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

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