Electron Transport Chain W1

Question 1

What is the Electronic Transport Chain?

Answer 1

Re-oxidises reduced coenzymes NADH and FADH back to there oxidised forms, In the process releasing 2 H- (electrons)

Question 2

Where are NAD+ and FADH recycled back into?

Answer 2

The cytosol and mitochondrial matrix

Question 3

What is the final electron acceptor?

Answer 3

Oxygen (aerobic)

This results in H2O being produced

Question 4

What is the ratio of ATP molecules between ETC and Krebs cycle?

Answer 4

32/34 ATP (ETC) : 2 ATP (KC)

Question 5

What does the Electron Transport Chain use from the Krebs Cycle?

Answer 5

NADH and FADH2

Question 6

What is the oxidised forms of NADH and FADH?

Answer 6

NAD+
FADH-

Question 7

Where does the Electronic Transport Chain occur?

Answer 7

Inner membrane of the mitochondria

Question 8

What happens when NADH and FADH2 arrive in the inner membrane mitochondria?

Answer 8

They have there H+ stripped away from them via carrier proteins

Question 9

How do the H+ molecules within the intermembrane space exit?

Answer 9

Via the protein ATP synthase

Question 10

What is ATP synthase?

Answer 10

Uses hydrogen to create ATP

Question 11

What does ATP synthase do?

Answer 11

Uses energy from the H+ to bond another phosphate to ADP and turn it into ATP

Question 12

Where is ATP synthase found?

Answer 12

Inner mitochondrial membrane

Question 13

What is ATP synthesis directly related too?

Answer 13

1) Supply of ADP and Pi
2) The protein gradient