1.7 Respiratory chain, oxidative phosphorylation Flashcards
1
Q
Which protein complexes take part in the electron transport chain?
A
Respiratory complex:
- I
- II
- III
- IV
2
Q
Respiratory complex I
A
- NADH dehydrogenase
- NADH + H+ used as the initial H+/electron donor
- Pumps 4 protons from the matrix → IM space
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/726/a_image_thumb.png?1559362598)
3
Q
Respiratory complex II
A
- Succinate dehydrogenase
- Succinate → Fumarate
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/727/a_image_thumb.png?1559362599)
4
Q
Respiratory complex III
A
- Produces reduced cytochrome c
- Translocation of 4 protons
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/728/a_image_thumb.png?1559362599)
5
Q
Respiratory complex IV
A
- Cytochrome-c oxidase
- Produces water
- Translocation of 2 protons
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/729/a_image_thumb.png?1559362600)
6
Q
Draw the respiratory chain
A
![](https://s3.amazonaws.com/brainscape-prod/system/cm/280/147/367/a_image_thumb.png?1560086773)
7
Q
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/731/q_image_thumb.png?1559362600)
A
H+
8
Q
- Enzyme
- Reaction
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/732/q_image_thumb.png?1559362600)
A
NADH dehydrogenase
- NADH → NAD+ + H+
9
Q
- Enzyme
- Reaction
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/733/q_image_thumb.png?1559362601)
A
Succinate dehydrogenase
- Succinate → Fumarate
10
Q
- Enzyme
- Reaction
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/734/q_image_thumb.png?1559362601)
A
Cytochrome-C oxidase
- 2H+ + 1/2O2 → H2O
11
Q
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/735/q_image_thumb.png?1559362601)
A
ATP synthase
12
Q
Q
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/736/q_image_thumb.png?1559362601)
A
Coenzyme Q (Ubiquinone)
13
Q
C
![](https://s3.amazonaws.com/brainscape-prod/system/cm/279/398/737/q_image_thumb.png?1559362601)
A
Cytochrome-C
14
Q
Cytochromes
A
Small proteins containing a haem group
15
Q
Importance of the respiratory chain
A
- Major source of energy
- Main driver of proton gradient across inner membrane
- Production of water from hydrogens