Electron Transport Chain and Oxidative Phosphorylation Quiz
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Questions and Answers

Which process generates a proton gradient across the inner mitochondrial membrane?

  • ATP Synthase
  • Electron transport chain (correct)
  • Oxidative phosphorylation
  • Citric acid cycle

What is the purpose of ATP Synthase in oxidative phosphorylation?

  • To transport protons across the inner mitochondrial membrane
  • To remove electrons from NADH and FADH2
  • To generate a proton gradient
  • To convert ADP to ATP (correct)

Which molecules are oxidized via the electron transport chain?

  • NADH and FADH2 (correct)
  • Protons and electrons
  • ADP and inorganic phosphate
  • NAD+ and FAD

What is the role of the mitochondria in aerobic respiration?

<p>To synthesize ATP (C)</p> Signup and view all the answers

What is the main function of the citric acid cycle?

<p>To remove electrons from NADH and FADH2 (C)</p> Signup and view all the answers

Which molecules are removed in the electron transport chain in the mitochondria?

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

What is the process called that generates a proton gradient across the inner mitochondrial membrane?

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

What is the complex that uses the proton gradient to synthesize ATP from ADP and inorganic phosphate (Pi)?

<p>ATP Synthase (A)</p> Signup and view all the answers

Which organelle is associated with all of these pathways: electron transport chain, oxidative phosphorylation, and citric acid cycle?

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

What molecules are generated by the citric acid cycle and then oxidized via the electron transport chain?

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

Flashcards

Electron transport chain

The process where electrons move through a series of proteins, ultimately producing ATP.

ATP Synthase

An enzyme that uses the proton gradient to generate ATP from ADP and inorganic phosphate.

Oxidative phosphorylation

The process of producing ATP using the energy from the electron transport chain.

Aerobic respiration

A series of chemical reactions that breaks down glucose to create energy.

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Oxidation

The process of removing electrons from molecules like NADH and FADH2.

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Citric acid cycle

A cycle of biochemical reactions that oxidizes molecules like NADH and FADH2.

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Electron transport

A pathway that generates energy via the movement of electrons.

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Mitochondria

The organelle that houses the electron transport chain, oxidative phosphorylation, and citric acid cycle.

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NADH & FADH2

Molecules carrying high-energy electrons, generated in the citric acid cycle.

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Proton gradient

The buildup of protons on one side of a membrane, creating a potential energy source.

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Study Notes

Electron Transport Chain and ATP Synthesis

  • The process that generates a proton gradient across the inner mitochondrial membrane is the electron transport chain.
  • The purpose of ATP Synthase in oxidative phosphorylation is to use the proton gradient to synthesize ATP from ADP and inorganic phosphate (Pi).
  • The electron transport chain oxidizes NADH and FADH2 molecules.
  • The proton gradient generated by the electron transport chain drives the production of ATP through the process of chemiosmosis.

Mitochondria and Aerobic Respiration

  • The role of the mitochondria in aerobic respiration is to generate most of the ATP through the process of oxidative phosphorylation.
  • Mitochondria are the site where the electron transport chain, oxidative phosphorylation, and citric acid cycle take place.

Citric Acid Cycle

  • The main function of the citric acid cycle is to produce NADH and FADH2, which are then oxidized via the electron transport chain.
  • The citric acid cycle generates NADH, FADH2, ATP, and coenzyme A, which are then used in the electron transport chain.
  • NADH and FADH2 molecules are removed in the electron transport chain in the mitochondria.

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Electron Transport Chain & Oxidative Phosphorylation PDF

Description

Test your knowledge of the electron transport chain and oxidative phosphorylation in biochemistry with this quiz. Explore how electrons are transported, NADH and FADH2 are removed, and a proton gradient is generated.

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