1) Photosystem II contains one of the most amazing enzyme activities on Earth. W
ID: 218511 • Letter: 1
Question
1) Photosystem II contains one of the most amazing enzyme activities on Earth. What makes it so amazing?
It catalyzes the formation of ATP from ADP using the energy of the proton gradient (photophosphorylation).
It converts the energy stored in reduced intermediates to formation of a proton gradient.
It can catalyze the oxidation of water to O2.
It catalyzes the incorporation of CO2 into organic molecules, making it possible to synthesize sugars and other biological molecules that sustain most of life on Earth.
2) True or false: in anaerobic organisms, all of the ATP that can be produced through glucose catabolism comes from glycolysis.
True
False
3) Aerobic metabolism produces approximately ________ x as much ATP as anaerobic metabolism per molecule of glucose consumed.
2x
3x
5x
15x
4) The reduction potential of FADH2 is _________ than/as that of NADH.
Higher
Lower
The same
5) Which of the following is NOT part of the pathway for transfer of electrons from NADH through the ETS?
Complex I
Complex II
Complex IV
Ubiquinone/Coenzyme Q
It catalyzes the formation of ATP from ADP using the energy of the proton gradient (photophosphorylation).
It converts the energy stored in reduced intermediates to formation of a proton gradient.
It can catalyze the oxidation of water to O2.
It catalyzes the incorporation of CO2 into organic molecules, making it possible to synthesize sugars and other biological molecules that sustain most of life on Earth.
2) True or false: in anaerobic organisms, all of the ATP that can be produced through glucose catabolism comes from glycolysis.
True
False
3) Aerobic metabolism produces approximately ________ x as much ATP as anaerobic metabolism per molecule of glucose consumed.
2x
3x
5x
15x
4) The reduction potential of FADH2 is _________ than/as that of NADH.
Higher
Lower
The same
5) Which of the following is NOT part of the pathway for transfer of electrons from NADH through the ETS?
Complex I
Complex II
Complex IV
Ubiquinone/Coenzyme Q
Explanation / Answer
1. (c) It can catalyze the oxidation of water to oxygen.
2. True
3. 15x
4. lower
5. Complex IV
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