5.2 Respiration

• Aerobic respiration requires oxygen, while anaerobic respiration does not.


  True
• Respiration converts chemical energy into usable ATP.


  True
• The electron transport chain produces about 36-38 molecules of ATP
• What is respiration in biochemical terms?

  Breaks down organic molecules
• Aerobic respiration occurs in the mitochondria
• What is produced during glycolysis?

  Pyruvate and ATP
• Where does glycolysis occur in the cell?

  Cytoplasm
• Aerobic respiration produces large amounts of ATP
• Where does the Krebs Cycle take place in the cell?

  Mitochondria
• What are the end products of glycolysis?

  Pyruvate, ATP, NADH
• What is the primary role of the Krebs Cycle in aerobic respiration?

  Produce electron carriers
• The Electron Transport Chain produces approximately 32-34 ATP molecules per glucose molecule.
• Order the steps of aerobic respiration:

  1️⃣ Glycolysis

  2️⃣ Krebs Cycle

  3️⃣ Electron Transport Chain
• What is the primary energy currency of the cell?

  ATP
• Where does glycolysis occur in the cell?

  Cytoplasm
• What is the final electron acceptor in the electron transport chain?

  Oxygen
• What is the net ATP production in glycolysis?

  2 ATP
• The electron transport chain generates more ATP than the Krebs Cycle.


  True
• What is the primary difference between anaerobic and aerobic respiration?

  Oxygen dependency
• What does the ETC utilize energy from to pump protons across the mitochondrial membrane?

  NADH and FADH2
• The proton gradient created in the ETC drives the process of chemiosmosis
• How many ATP molecules are produced per glucose in anaerobic respiration?

  2 ATP
• Anaerobic respiration is more efficient than aerobic respiration.

  False
• In which organisms is alcoholic fermentation the primary means of energy production when oxygen is not available?

  Yeast and bacteria
• What is the location of aerobic respiration in eukaryotic cells?

  Mitochondria
• Aerobic respiration requires oxygen
• Glycolysis occurs in the cytoplasm
• Oxygen is the final electron acceptor in the electron transport chain.


  True
• Where does the Krebs Cycle take place?

  Mitochondria
• The flow of H+ ions through ATP synthase during chemiosmosis drives the production of ATP
• Oxidative phosphorylation depends on the flow of protons through ATP synthase
• What is the ATP yield of oxidative phosphorylation per glucose molecule?

  32-34 ATP
• In yeast, the end products of anaerobic respiration are ethanol and carbon dioxide
• Steps of lactic acid fermentation

  1️⃣ Glycolysis

  2️⃣ Reduction of pyruvate to lactic acid
• The end products of alcoholic fermentation are ethanol and carbon dioxide
• Aerobic respiration produces more ATP than anaerobic respiration.


  True
• How many ATP molecules are produced per glucose in aerobic respiration?

  About 36-38 ATP
• Steps in aerobic respiration

  1️⃣ Glycolysis

  2️⃣ Citric Acid Cycle

  3️⃣ Electron Transport Chain
• Aerobic respiration is a highly efficient energy extraction process.


  True
• Glycolysis produces 2 molecules of pyruvate and 2 molecules of NADH.


  True