Principle of Bioenergetics Quiz
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Questions and Answers

What is the sum total of the chemical activities of all cells?

  • Metabolism (correct)
  • Bioenergetics
  • Redox reactions
  • Thermodynamics

    • In which stage of catabolism is the hydrolysis of macromolecules into their respective monomers involved?

  • Stage I (correct)
  • Stage III
  • Stage IV
  • Stage II

    • What is the main function of catabolic reactions?

  • Conversion of monomers to acetyl CoA
  • Breakdown of ATP
  • Synthesis of macromolecules
  • Generation of reducing power (NADPH) (correct)

    • What captures 40% of the energy released in catabolism?

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

    What is the primary source of energy for cells in cellular metabolism?

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

    What is the main product of Stage II in catabolism?

    <p>Acetyl CoA</p> Signup and view all the answers

    What is the main function of anabolic pathways?

    <p>Convert small precursors into macromolecules</p> Signup and view all the answers

    Which type of reaction releases energy in the form of ATP, NADH, NADPH, and FADH2?

    <p>Exergonic reactions</p> Signup and view all the answers

    What branch of biochemistry focuses on how cells transform energy by producing, storing, or consuming ATP?

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

    Which thermodynamic quantity describes the amount of energy capable of doing work during a reaction at constant temperature and pressure?

    <p>Gibbs free energy (G)</p> Signup and view all the answers

    What type of chemical reaction requires a net input of energy?

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

    What is the main product of Stage III in catabolism?

    <p>CO2</p> Signup and view all the answers

    Which process involves the conversion of chemical energy of fuels into concentration and electric gradients?

    <p>Cellular respiration</p> Signup and view all the answers

    What do living cells convert the chemical energy of fuels into?

    <p>Concentration gradients and electric gradients</p> Signup and view all the answers

    Which law states that for any physical and chemical change, the total amount of energy in the universe remains constant?

    <p>$1^{st}$ law of thermodynamics</p> Signup and view all the answers

    What is the sum total of all the chemical activities of all cells?

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

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