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BMS > ETC > Flashcards

ETC Flashcards

1
Q

Where does the ETC get electrons from

A

NADH and FADH2

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2
Q

ETC transfers electors from [low/high] to [low/high] electron affinity

A

ETC transfers electors from low to high electron affinity

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3
Q

What gradient is formed in the ETC

A

chemiosmotic or electrochemical gradient

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4
Q

What role does CoQ have in the ETC

A

helps link complexes I and II to complex III

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5
Q

what complex dehydrogenates NADH

A

Complex 1

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6
Q

what enzyme removes the Hydrogen from NAHD

A

NADH dehydrogenase

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7
Q

Name 4 electron carries within the complexes

A

Iron (Fe+3–> Fe+2)
Copper (Cu+1 –> Cu+2)
Riboflavin (FMN –> FMNH2)
Quinone (Q–> QH2)

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8
Q

what is another name for riboflavin

A

B2

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9
Q

what 2 roles does Complex I do

A
  1. accept NADH + donates e- to CoQ
  2. use e- energy to pump H+ into intermembrane space
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10
Q

What 1 role does complex II do

A

accept e- from FADH2 and donates to CoQ

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11
Q

What is another name for Complex II

A

succinate dehydrogenase

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12
Q

Which has more energy? NADH or FADH2

A

NADH as can pump H+ into intermembrane space

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13
Q

CoQ role

A

no contribution to H pumping
connects complexes

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14
Q

what is another name for CoQ

A

coenzyme Q10 or ubiquinone

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15
Q

Complex III role

A

accept e- from CoQ and donate to cytochrome c
Pump H+ into intermembrane space

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16
Q

what is another name for Complex III

A

cytochrome c reductase

17
Q

cytochrome c role

A

accepts e- from complex III and donates to complex IV
no contribution to H pumping
just connects complexes

18
Q

is cytochrome c polar or non polar + where is it

A

POLAR
hydrophilic and soluble in intermembrane space
moves along inner membrane

19
Q

what does complex IV do

A

accepts e- from cytochrome c and donates to Oxygen and make water
use e- to pump H+ into intermembrane space

20
Q

Which aspects of ETC are embedded in membrane

A

Complex I
Complex II
Complex III
Complex IV

21
Q

What is soluble in the intermembrane space

A

cytochrome c

22
Q

what is soluble in the inner membrane

A

CoQ

23
Q

How many ATP does 1 NADH make

A

3 ATP

24
Q

how many ATP does 1 FADH2 make

A

2 ATP

25
Q

ATP mady by ATP synthase gets to cytosol via what mechanism?

A

adenine nucleotide translocate antiporter exchanges ATP for ADP

26
Q

what brings phosphate into the mitochondrial matrix

A

phosphate translocate

27
Q
A

BMS (4 decks)

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