BIOENERGETICS and OXIDATIVE PHOSPHORYLATION II

Question 1

Also called “NADH Dehydrogenase”

Answer 1

Complex I

Question 2

Complex I is composed of?

Answer 2

Flavin mononucleotide
enzyme containing iron-sulfur

Question 3

enzyme in Complex I

Answer 3

NADH dehydrogenase

Question 4

Also called “Succinate dehydrogenase”

Answer 4

complex II

Question 5

lipid soluble which freely moves through
hydrophobic core of the membrane that connects 1st and 2nd complexes to 3rd and delivers its electrons

Answer 5

UBIQUINONE

Question 6

Also called “Cytochrome Oxidoreductase”

Answer 6

complex III

Question 7

complex III is composed of?

Answer 7

Cytochrome B
Fe-S protein
Rieske center
Cytochrome C protein

Question 8

Also called “ATP Synthase”

Answer 8

complex V

Question 8

have prosthetic heme group (but carries electrons and not oxygen)

Answer 8

cytochrome C protein

Question 9

complex IV is composed of?

Answer 9

cytochrome C
cytochrome A
cytochrome A3

Question 9

Also called “Cytochrome C Oxidase”

Answer 9

Complex IV

Question 10

As protons rush back through the membrane after having been pumped out along the ETC, this causes rotation of a ________

Answer 10

Nanoscale millwheel

Question 11

also known as Mitchell hypothesis

Answer 11

chemiosmotic hypothesis

Question 12

Electron transport is coupled to the phosphorylation of ADP by the pumping of protons across the inner mitochondrial membrane (Complex I, III, IV)

Answer 12

Proton pump

Question 13

The multisubunit enzyme ATP synthase (Complex V) synthesizes ATP using the energy of the proton gradient

Answer 13

ATP synthase

Question 14

drugs which closes the proton channel

Answer 14

oligomycin