Overview & Glycolysis
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Questions and Answers

What is the main difference between aerobic and anaerobic respiration?

  • The presence of water in the reaction
  • The amount of ATP produced
  • The final electron acceptor used (correct)
  • The enzymes involved in the process

    • What is the end product of glycolysis in both aerobic and anaerobic respiration?

  • ATP
  • Pyruvate (correct)
  • Lactic acid
  • NADH

    • How many ATP molecules are produced through anaerobic respiration?

  • Around 10 ATP
  • 30-32 ATP
  • 2 ATP (correct)
  • No ATP

    • What happens to pyruvate in the absence of oxygen?

    <p>It is converted into lactic acid</p> Signup and view all the answers

    Which organelle plays a crucial role in the aerobic respiration process?

    <p>Mitochondria</p> Signup and view all the answers

    What is the function of the Krebs Cycle in cellular respiration?

    <p>Production of NADH and FADH2</p> Signup and view all the answers

    Which molecule serves as the final electron acceptor in aerobic respiration?

    <p>Oxygen</p> Signup and view all the answers

    Glycolysis is the first step in both aerobic and anaerobic respiration.

    <p>True</p> Signup and view all the answers

    Aerobic respiration produces lactic acid as a byproduct.

    <p>False</p> Signup and view all the answers

    Anaerobic respiration produces more ATP molecules than aerobic respiration.

    <p>False</p> Signup and view all the answers

    The Krebs Cycle takes place in the cytoplasm of the cell.

    <p>False</p> Signup and view all the answers

    Oxidative phosphorylation is responsible for producing water and carbon dioxide in cellular respiration.

    <p>True</p> Signup and view all the answers

    Anaerobic respiration always leads to the production of lactic acid.

    <p>False</p> Signup and view all the answers

    Acetyl CoA is a product of glycolysis.

    <p>False</p> Signup and view all the answers

    Aerobic respiration requires ______ and is the preferred method when oxygen is available to cells

    <p>oxygen</p> Signup and view all the answers

    Anaerobic respiration occurs when ______ is not readily available

    <p>oxygen</p> Signup and view all the answers

    Both aerobic and anaerobic respiration start with ______

    <p>glycolysis</p> Signup and view all the answers

    Glycolysis yields NADH, a few ATP molecules, and two ______ molecules from glucose

    <p>pyruvate</p> Signup and view all the answers

    If oxygen is not present, pyruvate is converted into ______ in the anaerobic pathway

    <p>lactic acid</p> Signup and view all the answers

    If oxygen is present, pyruvate is transported to the ______ for further reactions

    <p>mitochondria</p> Signup and view all the answers

    The Krebs Cycle, electron transport chain, and oxidative phosphorylation ultimately produce ______, carbon dioxide, and more ATP

    <p>water</p> Signup and view all the answers

    Match the following with their correct description:

    <p>Aerobic respiration = Requires oxygen and produces around 30-32 ATP Anaerobic respiration = Occurs when oxygen is not readily available and produces lactic acid Glycolysis = Breakdown of glucose in the cytoplasm with an initial use of 2 ATP molecules Oxidative phosphorylation = Final stage in aerobic respiration producing water, carbon dioxide, and more ATP</p> Signup and view all the answers

    Match the following with their correct products:

    <p>Pyruvate conversion = Acetyl CoA, Krebs Cycle, electron transport chain, oxidative phosphorylation Anaerobic pathway = Lactic acid and two ATP molecules Glycolysis = NADH, a few ATP molecules, two pyruvate molecules Aerobic respiration = Carbon dioxide, water, around 30-32 ATP</p> Signup and view all the answers

    Match the following with their correct outcomes:

    <p>Lack of oxygen present = Conversion of pyruvate into lactic acid Presence of oxygen = Transport of pyruvate to mitochondria for further reactions End of glycolysis without oxygen = Production of only two ATP molecules End of glycolysis with oxygen = Transportation to mitochondria for acetyl CoA conversion</p> Signup and view all the answers

    Match the following with their roles in respiration:

    <p>NADH = Product of glycolysis contributing to further energy production Mitochondria = Organelle where pyruvate is transported for aerobic reactions Acetyl CoA = Intermediate in pyruvate conversion before entering the Krebs Cycle Krebs Cycle = Series of reactions in mitochondria generating more ATP and CO2</p> Signup and view all the answers

    Match the following with their correct stages:

    <p>Initial stage of glycolysis = Energy investment using 2 ATP molecules Final electron acceptor in anaerobic respiration = Pyruvate Final electron acceptor in aerobic respiration = Water and carbon dioxide End products of oxidative phosphorylation = Water, carbon dioxide, and additional ATP</p> Signup and view all the answers

    Match the following with their correct conversions:

    <p>Pyruvate to acetyl CoA conversion = Bridge between glycolysis and Krebs Cycle reactions Conversion in anaerobic pathway without oxygen = Pyruvate to lactic acid with only two ATP produced Conversion in aerobic pathway with oxygen present = Pyruvate to acetyl CoA for mitochondrial reactions Glucose breakdown in cytoplasm = Achieved through glycolysis with NADH and some ATP as products</p> Signup and view all the answers

    Match the following with their correct pathways:

    <p>Lactic acid production pathway = Occurs when oxygen is not available resulting in two ATP only Aerobic respiration pathway = Requires oxygen leading to water, CO2, and more ATP production Energy investment stage in glycolysis = Initial use of 2 ATP molecules to start glucose breakdown Conversion to acetyl CoA pathway = Preparation step before entering the Krebs Cycle in mitochondria</p> Signup and view all the answers

    Study Notes

    • Aerobic respiration requires oxygen and is the preferred method when oxygen is available to cells, involving a series of steps using different enzymes to produce carbon dioxide, water, around 30-32 ATP, and heat.
    • Anaerobic respiration occurs when oxygen is not readily available, resulting in the production of lactic acid, only two ATP molecules, and a little bit of heat, with pyruvate as the final electron acceptor.
    • Both aerobic and anaerobic respiration start with glycolysis, which is the breakdown of glucose in the cytoplasm using various enzymes and involving an energy investment stage with an initial use of 2 ATP molecules.
    • Glycolysis yields NADH, a few ATP molecules, and two pyruvate molecules from glucose, with the fate of pyruvate depending on the presence of oxygen.
    • If oxygen is not present, pyruvate is converted into lactic acid in the anaerobic pathway, resulting in two ATP molecules.
    • If oxygen is present, pyruvate is transported to the mitochondria for further reactions including the conversion to acetyl CoA, the Krebs Cycle, electron transport chain, and oxidative phosphorylation, ultimately producing water, carbon dioxide, and more ATP.

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    Description

    Test your knowledge on the processes of aerobic and anaerobic respiration, including glycolysis, conversion of pyruvate, the Krebs Cycle, and oxidative phosphorylation. Learn about the differences in ATP production, final products, and electron acceptors.

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