Electron Transport Chain and Oxidative Phosphorylation Flashcards Preview

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Flashcards in Electron Transport Chain and Oxidative Phosphorylation Deck (10)
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1
Q

describe the structure of a mitochondria from outside to inside (4)

A
  1. outermembrane
  2. inter membrane space
  3. inner membrane
  4. matrix
2
Q

what is found in the inner membrane of a mitochondria?

A

enzymes for electron transport and oxidative phosphorylation

3
Q

describe the matrix of mitochondria

A

location of metabolic processes

4
Q

can electron transport occur in all cells?

A

nope! only in cells with mitochondria

5
Q

can cells without mitochondria get energy from NADH and FADH2? why or why no?

A

no; not ETC or oxidative phosphorylation

6
Q

describe the 3 steps of the electron transport chain

A
  1. electrons are removed from NADH + H+ and FADH2
  2. electrons are transported through the ETC and used to make H2O
  3. H+ ions are pumped from the matrix into the intermembrane space, creating a proton gradient in the inter membrane space
7
Q

describe the 2 steps of oxidative phosphorylation

A
  1. H+ ions from the inter membrane space bind to ATP synthase on inner membrane
  2. ATP synthase synthesizes ATP
8
Q

how many H+ are needed per ATP?

A

4

9
Q

describe how and how much ATP are yielded from one molecule of NADH

A

electron transport results in release of ten H+ into intermembrane space (10/4= 2.5), so synthesis of 2.5 ATP

10
Q

describe how and how much ATP are yielded from one molecule of FADH2

A

this molecule enters further down the ETC, so only releases six H+ into the intermembrane space (6/4= 1.5) so synthesis of 1.5 ATP