oxidative phosphorylation

Question 1

where do the hydrogen atoms that have been collected by NAD and FAD go?

Answer 1

delivered to electron transport chains

Question 2

where are electron transport chains found?

Answer 2

membranes of the cristae of the mitochondria

Question 3

what happens to the hydrogen atoms?

Answer 3

dissociate into hydrogen ions and electrons

Question 4

what are the high energy electrons used for?

Answer 4

synthesis of ATP by chemiosmosis

Question 5

how is energy released?

Answer 5

redox reactions as the electrons reduce and oxidise electron carriers as they flow down the electron transport chain

Question 6

what is the energy released used for?

Answer 6

to create a proton gradient leading to the diffusion of protons through ATP synthase resulting in the synthesis of ATP

Question 7

what happens at the end of the electron transport chain?

Answer 7

electrons combine with hydrogen ions and oxygen to form water

Question 8

what role does oxygen play?

Answer 8

it is the final electron acceptor and the electron chain cannot operate unless oxygen is present

Question 9

what can the hydrogens released from NAD and FAD combine with?

Answer 9

directly with oxygen releasing energy from the formation of bonds during the production of water

Question 10

where do the protons come from for chemiosmosis?

Answer 10

they are released by reduced NAD and FAD
NAD releases 1 and FAD releases 2