4.2.1 Aerobic Respiration

• Aerobic respiration converts glucose into carbon dioxide, water, and ATP
• The electron transport chain in the inner membrane produces ATP and water
• Where does glycolysis occur in the cell?

  Cytoplasm
• The net ATP yield from glycolysis is 2 ATP molecules.


  True
• Which stage of aerobic respiration produces the most ATP?

  Electron Transport Chain
• Glycolysis occurs in the cytoplasm
• The Krebs cycle takes place in the mitochondrial matrix.


  True
• What are the end products of glycolysis?

  Pyruvate, ATP, NADH
• What is the net yield of ATP from glycolysis?

  2 ATP
• Where does the link reaction occur?

  Mitochondria
• Match the stage of aerobic respiration with its location:

  Glycolysis ↔️ Cytoplasm

  Link Reaction ↔️ Mitochondria

  Krebs Cycle ↔️ Mitochondrial matrix

  Electron Transport Chain ↔️ Inner mitochondrial membrane
• The Krebs cycle generates NADH and FADH2 for the electron transport chain.
• How many NADH molecules are produced in the Krebs cycle?

  6
• Arrange the steps in the electron transport chain in the correct order.

  1️⃣ Electrons from NADH and FADH2 are transferred through protein complexes

  2️⃣ Energy is released to pump protons into the intermembrane space

  3️⃣ A proton gradient is created

  4️⃣ ATP synthase produces ATP
• Aerobic respiration requires oxygen to occur.


  True
• The inner mitochondrial membrane is folded into cristae to increase surface area.
• The Krebs cycle occurs in the mitochondrial matrix
• Match the component with its key process:

  Inner Membrane (Cristae) ↔️ Electron Transport Chain

  Matrix ↔️ Krebs Cycle
• Order the main stages of aerobic respiration:

  1️⃣ Glycolysis

  2️⃣ Krebs Cycle

  3️⃣ Electron Transport Chain
• The Krebs cycle releases carbon dioxide, NADH, FADH2, and some ATP
• Glycolysis requires oxygen to produce pyruvate.

  False
• What is the end product of glycolysis?

  Pyruvate
• The link reaction releases carbon dioxide and generates NADH.

  True
• The link reaction connects glycolysis to the Krebs cycle
• How many NADH molecules are produced per molecule of acetyl CoA in the Krebs cycle?

  6
• What are the final products of the electron transport chain?

  ATP and water
• The overall ATP yield from aerobic respiration is 38-40 ATP molecules.

  True
• Anaerobic respiration does not require oxygen
• Aerobic respiration primarily occurs in the mitochondria.

  True
• Arrange the main stages of aerobic respiration in the correct order:

  1️⃣ Glycolysis

  2️⃣ Krebs Cycle

  3️⃣ Electron Transport Chain
• During glycolysis, 2 ATP molecules are used, and 4 ATP molecules are produced
• Match the stage of aerobic respiration with its location:

  Glycolysis ↔️ Cytoplasm

  Krebs Cycle ↔️ Mitochondrial matrix

  Electron Transport Chain ↔️ Inner mitochondrial membrane
• Arrange the main stages of aerobic respiration in the correct order.

  1️⃣ Glycolysis

  2️⃣ Transition Reaction

  3️⃣ Krebs Cycle (Citric Acid Cycle)

  4️⃣ Electron Transport Chain (ETC)
• What is released during the transition reaction?

  Carbon dioxide
• The electron transport chain is located in the inner mitochondrial membrane
• The energy investment phase of glycolysis requires 2 ATP molecules.
• The net yield of NADH from glycolysis is 2 molecules.


  True
• During the link reaction, pyruvate is decarboxylated to release carbon dioxide.
• Where does the Krebs cycle take place?

  Mitochondrial matrix
• The net ATP yield from the Krebs cycle is 2 molecules.

  True