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Electron Transport Chain quiz Flashcards

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Electron Transport Chain quiz
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  • What is the abbreviation commonly used for the electron transport chain?

    ETC.

  • In which part of the mitochondria is the electron transport chain located?

    The inner mitochondrial membrane.

  • What are the two main electron carriers that donate electrons to the electron transport chain?

    NADH and FADH2.

  • What type of reactions are involved in the electron transport chain to harness energy from electrons?

    Redox reactions (oxidation-reduction reactions).

  • What is the final electron acceptor in the electron transport chain during aerobic respiration?

    Oxygen gas (O2).

  • What byproduct is formed when oxygen acts as the final electron acceptor in the electron transport chain?

    Water (H2O).

  • What gradient is created by the electron transport chain to drive ATP synthesis?

    A hydrogen ion (proton) concentration gradient.

  • What process follows the electron transport chain to produce ATP?

    Chemiosmosis.

  • Which step of aerobic cellular respiration does the electron transport chain belong to?

    The 4th step.

  • What happens to NADH and FADH2 when they donate electrons to the electron transport chain?

    NADH becomes NAD+ and FADH2 becomes FAD.

  • What is the role of the electron transport chain in aerobic respiration?

    To harness the energy of electrons to create a hydrogen ion concentration gradient.

  • What is the primary function of the hydrogen ion concentration gradient created by the electron transport chain?

    To drive the synthesis of ATP through chemiosmosis.

  • What is the space inside the inner mitochondrial membrane called?

    The mitochondrial matrix.

  • What is the main purpose of the redox reactions in the electron transport chain?

    To transfer electrons and release energy to pump hydrogen ions into the intermembrane space.

  • which of the following statements about the electron transport chain is true?
    The electron transport chain is located in the inner mitochondrial membrane and utilizes electrons from NADH and FADH2 to create a hydrogen ion concentration gradient, with oxygen acting as the final electron acceptor.
  • which is the final electron acceptor in the electron transport chain of cellular respiration?
    Oxygen (O2) is the final electron acceptor in the electron transport chain of cellular respiration.
  • in mitochondrial electron transport, what is the direct role of o2?
    The direct role of O2 in mitochondrial electron transport is to act as the final electron acceptor, forming water as a byproduct.
  • in mitochondrial electron transport, what is the direct role of o2?
    The direct role of O2 in mitochondrial electron transport is to act as the final electron acceptor, forming water as a byproduct.
  • which of the following are stages of electron transfer phosphorylation? select all that apply.
    The stages of electron transfer phosphorylation include the electron transport chain and chemiosmosis.
  • what is the role of oxygen in the electron transport chain?
    The role of oxygen in the electron transport chain is to serve as the final electron acceptor, combining with electrons and hydrogen ions to form water.