oxidative phosphorylation

• Where does oxidative phosphorylation occur?

  Mitochondrial inner membrane
• What structures are found in the mitochondrial inner membrane?

  Enzymes and carrier proteins
• What is the first stage of aerobic respiration?

  Glycolysis
• What is created from glycolysis that enters the mitochondrial matrix?

  Pyruvate
• What is formed during the link reaction?

  Acetyl coenzyme A
• Where does the Krebs cycle occur?

  Mitochondrial matrix
• How many reduced NAD are produced from one glucose molecule?

  Ten
• How many reduced FAD are produced from one glucose molecule?

  Two
• What is the primary function of oxidative phosphorylation?

  Produce ATP
• What are the three key parts of oxidative phosphorylation?

  Electron transfer chain, electrochemical gradient, chemiosmotic theory
• What theory does oxidative phosphorylation exemplify?

  Chemiosmotic theory
• What happens to hydrogen atoms in oxidative phosphorylation?

  They split into protons and electrons
• What is the role of the electron transport chain?

  Pass electrons along embedded proteins complexes to produce energy to transport protons through membrane
• What is created as protons are transported to the intermembrane space?

  An electrochemical gradient
• How do protons move back through the membrane?

  Through ATP synthase via facilitated diffusion down their concentration gradient
• What reaction does ATP synthase catalyze?

  ADP + Pi → ATP
• What is the importance of oxygen in oxidative phosphorylation?

  Final electron acceptor in the chain and is used to produce water
• What is produced when oxygen picks up electrons and protons?

  Water
• Why is oxygen vital for the electron transport chain?

  Prevents backup of electrons in the chain
• What would happen if oxygen did not accept electrons?

  No more electrons would move down the chain
• What is the overall product of aerobic respiration?

  Water and ATP
• What are the stages of aerobic respiration?

  1. Glycolysis
  2. Link reaction
  3. Krebs cycle
  4. Oxidative phosphorylation
• What are the key processes involved in oxidative phosphorylation?

  • Electron transport chain
  • Proton movement across the membrane
  • ATP synthesis via ATP synthase
• What is the significance of the electrochemical gradient in oxidative phosphorylation?

  • Drives protons back through ATP synthase
  • Facilitates ATP production
• What is the role of reduced coenzymes in oxidative phosphorylation?

  • Carry hydrogen to the electron transport chain
  • Split into protons and electrons
• What is the importance of oxygen in cellular respiration?

  • Acts as the final electron acceptor
  • Prevents backup of electrons in the chain
  • Produces water as a byproduct