Question

1. Which of the following pairs of redox molecules is NOT in the proper order of lower to higher reduction potential?

a.) FAD bound to succinate dehydrogenase then FMN b.) FMN then Fe-S from Complex I
c.) Fe-S cluster from Complex II then CoQ
d.) Cyt a3 then oxygen

e.) all are correct

2. put the following components of the electron transport chain in order. a.) cytochrome c

b.) coenzyme Q
c.) oxygen
d.) Fe-S cluster from Complex I
e.) flavin mononucleotide

3.Which of these steps does not result in depletion of protons in the matrix and buildup of protons in the intermembrane space of the mitochondrion?

a.) Oxidation of NADH by FMN and subsequent reduction of the Fe-S cluster of complex I.
b.) Oxidation of FADH2 by the Fe-S cluster in complex II.
c.) Generation of water in the mitochondrial matrix.
d.) Oxidation of FMNH2 by the Fe-S cluster in complex I.

e.) All of these contribute to the pH gradient.

4. how many moles of ATP will you get for 1 mole of NADH that is reoxidized by the electron transport chain? Please give only a number.

5.Which of these accurately describes the oxidized Fe-S cluster from Complex II in the ETC?
a.) It is responsible for oxidizing FMNH2
b.) It is responsible for reducing CoenzymeQ
c.) It will not accept protons resulting in protons being released back to the matrix
d.) Both a and b

e.) All of the above 

Answer 1

1. Of the following the one which is not in th lower to higher reduction potential style is,

b) FMN then Fe-S from Complex I

2. Order of steps in electron transport chain,

d.) Fe-S cluster from Complex I

b.) coenzyme Q

e.) flavin mononucleotide

a.) cytochrome c

c.) oxygen

3. The steps that does not result in depletion of protons in the matrix and buildup of protons in the intermembrane space of the mitochondrion,

c.) Generation of water in the mitochondrial matrix.

4. moles of ATP will you get for 1 mole of NADH that is reoxidized by the electron transport chain? Please give only a number.

1.5

5.the statement which accurately describes the oxidized Fe-S cluster from Complex II in the ETC
d.) Both a and b