5- Stage Four- Oxidative Phosphyrylation

Question 1

define oxidative phosphorylation

Answer 1

process where energy from electron transport chain is used to make ATP

Question 2

what does oxidative phosphorylation rely on?

Answer 2

chemiosmosis

Question 3

what is chemiosmosis?

Answer 3

where energy in a chemical gradient established by the movement of electrons is used to produce ATP

Question 4

what does chemiosmosis depend on?

Answer 4

depends on the creation of a proton concentration gradient

Question 5

name two ways that electrons are excited?

Answer 5

1. Photosynthesis via absorbing light in the chlorophyll
2. Respiration- high energy electrons are released when glucose chemical bonds are broken down in mitochondria

Question 6

where does oxidative phosphorylation take place?

Answer 6

cristae

Question 7

oxygen is the ——

Answer 7

final electron acceptor in the ETC

Question 8

how is oxygen the final electron acceptor in the ETC?

Answer 8

as at the end of the ETC, electrons protons and oxygen from the blood combine to form water

Question 9

what can one NADH molecule produce of ATP?

Answer 9

2.5 ATP

Question 10

what can one FADH molecule produce of ATP?

Answer 10

1.5

Question 11

whats the total amount of ATP produced during aerobic respiration?

Answer 11

32

Question 12

how efficient is ATP production?

Answer 12

32%

Question 13

why is the efficiency level low?

Answer 13

• some ATP is used removing hydrogen from NADH
• some ATP is used moving pyruvate into the mitochondria via active transport