Electron Transport Chain + Chemiosmosis Flashcards

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1
Q

3 areas of major importance in the mitochondria for electron transport chain

A
  1. Mitochondrial Matrix
  2. Inner mitochondrial membrane
  3. Intermembrane space
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2
Q

What does Succinate Dehydrogenase do?

A
  • Protein that allows FADH2 to enter if NADH + H+ has not come in already
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3
Q

What happens in chemiosmosis?

A
  • H+ ions are pumped through ATP Synthase
  • Causes ADP + Pi to react and form ATP
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4
Q

Summary of the Electron Transport Chain

A
  • Involves several membrane bound proteins and active molecules
  • Pumps 3H+’s per NADH
  • Pumps 2H+’s per FADH2
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5
Q

Summary of Chemiosmosis

A
  • Creates an electrochemical or proton gradient which motivates H+ to re-enter the matrix through ATP synthase
  • The electrochemical gradient creates a “proton motive force” which moves H+ ions
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6
Q

What starts the electron transport chain?

A
  • NADH + H+ gets oxidized to NAD+
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7
Q

What is O2 in the ETC

A
  • “ultimate electron acceptor”
  • because of it’s high electronegativity
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8
Q

What is H2O in the ETC?

A

The last molecule that contains glucose’s electrons

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