The Electron Transport Chain

Question 1

What is the electron transport chain?

Answer 1

a chain of membrane associated electron carriers

Question 2

What are the two primary functions of the electron transport chain?

Answer 2

facilitate the transfer of electrons to the terminal electron acceptor (O2)
generate ATP using energy released during electron transfer

Question 3

_______ ________ allows us to extract electrons for energy in the electron transport chain

Answer 3

oxidative phosphorylation

Question 4

How is the electron transport chain in bacteria different?

Answer 4

located in plasma membrane 9eukaryotes have it in mitochondrial membrane)
more diversity in terms of carriers
electron transport chains can be branched
can be shorter

Question 5

During the electron transport chain electrons are dropped off with the _______ carrier, brought down to the ______ carrier, and added onto the ____ _______ acceptor (O2)

Answer 5

first, final, final terminal

Question 6

In the ETC, carriers are arranged based on ____ _______ , from lowest to highest (most negative to most positive)

Answer 6

reduction potential

Question 7

In complex one of the electron transport chain, ______ donates protons and electrons to ________ ___________. These protons and electrons are then passed to the _______. The electrons are then passed to the ________, and the protons are pushed ______ of the cell

Answer 7

NADH, NADH dehydrogenase, Flavoproteins, iron-sulfur proteins, out

Question 8

In complex two, _______ donates electrons to ______ ______ once the electrons are donated, it turns into FAD. This electrons then travel to the ________ ______

Answer 8

FADH2, succinate dehydrogenase, Quinone complex

Question 9

In the quinone complex, electrons are obtained from ______ _______ , and protons are gained from the disassociation of ________. These electrons are then passed to_______________ , and the ________ ______ protein in complex 3.

Answer 9

complex two, water, cytochrome BL & BH, Iron-sulfur

Question 10

Electrons are passed from cytochrome BH & BL and iron-sulfur protein to ____________ in complex 3. These electrons are then passed to ____________.

Answer 10

cytochrome C1. Cytochrome C

Question 11

In complex 4, Protons and Oxygen come in. Electrons from cytochrome C are passed to ______ _______ in complex 4, which pushes ________ out of the cell. These electrons are then passed to ______ ________

Answer 11

Cytochrome a, protons, Cytochromes a3