Oxidative Phosphorylation

Question 1

When does this take place?

Answer 1

After the Krebs cycle?

Question 2

Where does this take place?

Answer 2

In the inner I-N-N-E-R mitochondrial membrane

Question 3

What does this reaction mainly require from the previous reactions?

Answer 3

NADH from Glycolysis, link reaction, Krebs cycle
FADH from Krebs cycle

Question 4

Is NADH from glycolysis used in oxidative phosphorylation?

Answer 4

Only if oxygen is present it will diffuse in to the mitochondria

Question 5

Is NADH from glycolysis used in oxidative phosphorylation?

Answer 5

Only if oxygen is present it will diffuse in to the mitochondria

Question 6

Oxidation of NADH and FADH

Answer 6

Loses hydrogen ion and high energy electron

Question 7

Electrons released from oxidation of NADH and FADH

Answer 7

Electrons released into electron transfer chain in the inner mitochondrial membrane
And passed along electron carriers

Question 8

Movement of electrons in electron transfer chain..

Answer 8

Will release energy for the active transport of H+ ions against an electrochemical gradient from the matrix to inside the inter membrane soace

Question 9

Once H+ ions have been actively pumped into inter membrane space, what happens?

Answer 9

They will diffuse down back into the matrix via ATP synthase down electrochemical gradient

Question 10

Diffusion of H+ ions into matrix will..

Answer 10

Release energy to change tertiary structure of ATP synthase to be complementary to ADP and Pi substrate to synthesise ATP

Question 11

The hydrogen ions and electrons and oxygen in the matrix can..

Answer 11

Form water by reduction of oxygen

Question 12

Final electron acceptor of electron transfer chain

Answer 12

Oxygen