Biochemistry Unit II Quiz: Metabolism, Bioenergetics, Photosynthesis
18 Questions
2 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

According to the passage, which of the following is the relationship between enthalpy (H), entropy (S), and free energy (G)?

  • $G = H + S$
  • $G = H - S$
  • $G = H + TS$
  • $G = H - TS$ (correct)
  • What is the defining characteristic of a high energy compound according to the passage?

  • Compounds that release more energy than the hydrolysis of ATP to ADP + Pi
  • Both (a) and (b) (correct)
  • Compounds that contain a phosphate group
  • Compounds that release at least 7 Cal/mol of energy upon hydrolysis at pH 7.0
  • What is the standard free energy (G) change according to the passage?

  • The free energy change when the reactants or products are at any concentration at pH 7.0
  • The free energy change when the reactants or products are at a concentration of 1 mol/l at pH 7.0 (correct)
  • The free energy change when the reactants or products are at any concentration at any pH
  • The free energy change when the reactants or products are at a concentration of 1 mol/l at any pH
  • Which of the following is NOT a characteristic of high energy compounds according to the passage?

    <p>They are the only compounds that can be used to store and transfer energy in biological systems</p> Signup and view all the answers

    According to the passage, how is the relationship between enthalpy (H), entropy (S), and free energy (G) mathematically expressed?

    <p>$G = H - TS$</p> Signup and view all the answers

    What is the defining characteristic of a low energy compound according to the passage?

    <p>Both (a) and (b)</p> Signup and view all the answers

    Which of the following is a key principle of the chemiosmotic theory?

    <p>The proton gradient across the inner mitochondrial membrane is the driving force for ATP synthesis.</p> Signup and view all the answers

    What is the primary function of the electron transport chain in oxidative phosphorylation?

    <p>To create a proton gradient across the inner mitochondrial membrane.</p> Signup and view all the answers

    Which of the following is a correct statement about photosynthesis?

    <p>It converts light energy into chemical energy in the form of ATP and NADPH.</p> Signup and view all the answers

    What is the primary role of metabolism in living organisms?

    <p>Both (a) and (b).</p> Signup and view all the answers

    Which of the following is a high-energy compound involved in bioenergetics?

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

    What is the primary function of biological oxidation in cellular metabolism?

    <p>To generate ATP through oxidative phosphorylation.</p> Signup and view all the answers

    In the process of oxidative phosphorylation, which of the following is the terminal electron acceptor?

    <p>Molecular oxygen ($O_2$)</p> Signup and view all the answers

    Which of the following statements accurately describes the chemiosmotic theory?

    <p>It proposes that a proton gradient across the inner mitochondrial membrane drives ATP synthesis.</p> Signup and view all the answers

    Which of the following coenzymes is reduced during the electron transport chain?

    <p>NADH and FADH2</p> Signup and view all the answers

    Which of the following processes is responsible for the formation of a proton gradient across the inner mitochondrial membrane?

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

    Which of the following statements accurately describes bioenergetics?

    <p>It deals with the transformation and use of energy by living cells.</p> Signup and view all the answers

    Which of the following processes is directly coupled to ATP synthesis during oxidative phosphorylation?

    <p>Chemiosmotic mechanism</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser