BB 451 Week 1 questions well answered
to pass graded A+
Can you recognize oxidation and reduction? - correct answer ✔✔Oxidation: loss
of electrons
Reduction: gain of electrons
Why is there potential energy in redox reactions? - correct answer ✔✔bc they are
gaining electrons and therefore energy too
Contrast the ETS with photosynthesis? - correct answer ✔✔ETS: oxidation drives
electron transport by creating reduced electron carriers
Photosynthesis: process reversed
Where in the cell is the ETS located? - correct answer ✔✔inner mitochondrial
membrane
What is the purpose of the proton gradient? - correct answer ✔✔to be able to use
it to generate energy
How is the product of glycolysis related to the CAC and the ETS? - correct answer
✔✔pyruvate get to the CAC through the ETS
What is the final electron acceptor of the ETS? - correct answer ✔✔Oxygen
, What is respiratory control? - correct answer ✔✔where the amount of oxygen is
adjusted to allow for the CAC to continue
What complex does NADH donate electrons to? - correct answer ✔✔Complex 3
How do the electrons move through the chain? What are the molecules or
complexes involved? - correct answer ✔✔They are pumped from the matrix into
the inter mitochondrial membrane.
e- from NADH to complex 1 (2e-) to coenzyme Q (1e-) to complex 3 (1e-) to
cytochrome c (1e-) to complex 4 (2e-) to oxygen to make water
What does coenzyme Q do? - correct answer ✔✔gives away electrons one at a
time even though it is given 2 at a time
What does cytochrome c do? - correct answer ✔✔gives one electron to complex 4
and helps to see how species are related
Where are the most protons located - correct answer ✔✔in the inter
mitochondrial membrane
what is special about complex 2, and what is its other name? - correct answer
✔✔it came from CAC and is anchored in the mitochondrial membrane, it doesn't
require proton pumping.
to pass graded A+
Can you recognize oxidation and reduction? - correct answer ✔✔Oxidation: loss
of electrons
Reduction: gain of electrons
Why is there potential energy in redox reactions? - correct answer ✔✔bc they are
gaining electrons and therefore energy too
Contrast the ETS with photosynthesis? - correct answer ✔✔ETS: oxidation drives
electron transport by creating reduced electron carriers
Photosynthesis: process reversed
Where in the cell is the ETS located? - correct answer ✔✔inner mitochondrial
membrane
What is the purpose of the proton gradient? - correct answer ✔✔to be able to use
it to generate energy
How is the product of glycolysis related to the CAC and the ETS? - correct answer
✔✔pyruvate get to the CAC through the ETS
What is the final electron acceptor of the ETS? - correct answer ✔✔Oxygen
, What is respiratory control? - correct answer ✔✔where the amount of oxygen is
adjusted to allow for the CAC to continue
What complex does NADH donate electrons to? - correct answer ✔✔Complex 3
How do the electrons move through the chain? What are the molecules or
complexes involved? - correct answer ✔✔They are pumped from the matrix into
the inter mitochondrial membrane.
e- from NADH to complex 1 (2e-) to coenzyme Q (1e-) to complex 3 (1e-) to
cytochrome c (1e-) to complex 4 (2e-) to oxygen to make water
What does coenzyme Q do? - correct answer ✔✔gives away electrons one at a
time even though it is given 2 at a time
What does cytochrome c do? - correct answer ✔✔gives one electron to complex 4
and helps to see how species are related
Where are the most protons located - correct answer ✔✔in the inter
mitochondrial membrane
what is special about complex 2, and what is its other name? - correct answer
✔✔it came from CAC and is anchored in the mitochondrial membrane, it doesn't
require proton pumping.
