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Electron Transport Chain and ATP Synthesis Quiz

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Electron Transport Chain and ATP Synthesis Quiz

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Questions and Answers

What is the ultimate 'electron sink' that drives the oxidation reactions in the electron transport chain?

FADH+

NADH

CO2

Molecular O2 (correct)

Which organelle is the main site of ATP synthesis?

Lysosome

Mitochondria (correct)

Endoplasmic Reticulum

Golgi Apparatus

What is the purpose of the Proton Motive Force (PMF) generated by the electron transport chain?

Enhancing the production of CO2

Promoting the formation of NADH

Facilitating the breakdown of glucose

Driving the synthesis of ATP (correct)

Which part of the mitochondria is impermeable to most molecules except those with specific transporters or channels?

Inner membrane Signup and view all the answers

What are the high energy electrons carried by to generate a proton H+ gradient across the inner mitochondrial membrane?

NADH, FADH+ Signup and view all the answers

What is the ultimate function of the Electron Transport Chain (ETC)?

To generate a proton H+ gradient for ATP synthesis Signup and view all the answers

Which organelle contains an outer membrane permeable to most small molecules via porins?

Mitochondria Signup and view all the answers

What is the role of molecular O2 in the electron transport chain?

To act as the ultimate 'electron sink' driving the oxidation reactions Signup and view all the answers

What is the main function of the inner mitochondrial membrane?

To house enzymes and ETC complexes Signup and view all the answers

What drives the synthesis of ATP in the mitochondria?

Proton Motive Force (PMF) Signup and view all the answers

Study Notes

Electron Transport Chain

Oxygen is the ultimate 'electron sink' that drives the oxidation reactions in the electron transport chain.
The purpose of the Proton Motive Force (PMF) generated by the electron transport chain is to drive ATP synthesis.

Mitochondria Structure

The inner mitochondrial membrane is impermeable to most molecules except those with specific transporters or channels.
The outer mitochondrial membrane is permeable to most small molecules via porins.

Electron Transport and ATP Synthesis

High-energy electrons are carried by electron carriers (such as NADH and FADH2) to generate a proton (H+) gradient across the inner mitochondrial membrane.
The ultimate function of the Electron Transport Chain (ETC) is to generate a proton gradient that drives ATP synthesis.
The main function of the inner mitochondrial membrane is to facilitate the electron transport chain and ATP synthesis.
The synthesis of ATP in the mitochondria is driven by the proton motive force generated by the electron transport chain.

Oxygen's Role

Molecular O2 is the final electron acceptor, which receives the electrons at the end of the electron transport chain.

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Description

Test your knowledge of biochemistry with this quiz on the purpose of the Electron Transport Chain (ETC) in generating ATP. Explore how high-energy electrons drive the synthesis of ATP and the complete oxidation of glucose.