2. Cellular Respiration - Electron Transport Chain

Question 1

What happens to hydrogen ions and high energy electrons?

Answer 1

They are passed to coenzymes NAD and FAD in glycolysis and citric acid pathways

Question 2

What do the coenzymes NAD and FAD do?

Answer 2

Bring the hydrogen ions and associated high energy electrons to the electron transport chain in the form of NADH and FADH2

Question 3

What is the electron transport chain a collection of?

Answer 3

Carrier proteins attached to the inner mitochondrial membrane

Question 4

What does the passage of H ions and high energy electrons result in?

Answer 4

The synthesis of ATP

Question 5

ATP is synthesised as…

Answer 5

High energy electrons are used to pump H ions across a membrane

Question 6

What does the return flow of hydrogen ions do?

Answer 6

It drives ATP synthase and produces the bulk of ATP generated by cellular respiration

Question 7

What is oxygen and what does it do?

Answer 7

It is the final electron acceptor and combines with H ions and high energy electrons to form water