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Cellular Respiration

Cellular Respiration. ATP = A denosine T ri p hosphate. What is it? Energy molecule How? Energy stored in chemical bonds When ATP is broken apart, energy is released Why? ATP used for many activities Muscles, heart, translation, mitosis, active transport, etc….

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Cellular Respiration

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  1. Cellular Respiration

  2. ATP = Adenosine Triphosphate • What is it? Energy molecule • How? • Energy stored in chemical bonds • When ATP is broken apart, energy is released • Why? ATP used for many activities • Muscles, heart, translation, mitosis, active transport, etc…

  3. Cellular Respiration Overview Defined: Conversion of glucose into ATP Performed by the mitochondria Exergonic reaction: releases energy Who: All life End Result: ATP

  4. Cellular Respiration:Stage 1 - Glycolysis • Defined: breakdown of glucose (6C) into two 3C molecules • Gain of 2ATP molecule • Anaerobic process (no O2 required)

  5. Glucose (6 carbon molcule) ATP ATP ATP ATP ATP ATP

  6. Cellular Respiration with oxygen present: Stage 2 – Aerobic Respiration • Defined: Creating ATP with the help of oxygen • Two 3C molecules & oxygen recreate ATP • 36 ATP molecules created • CO2 waste created • All total: 1 glucose molecule = 38 ATP molecules

  7. Cellular Respiration without oxygen present: Stage 2 – Anaerobic Respiration 1) Lactic Acid Fermentation: ATP created without oxygen (enzymes are used) Byproduct: Lactic acid Lactic acid buildup causes sore muscles Much fewer ATP molecules are created (2 ATP)

  8. Cellular Respiration without oxygen present: Stage 2 – Anaerobic Respiration 2) Alcoholic Fermentation: ATP and alcohol are created from glucose without oxygen Performed by plants and microorganisms Glucose, ADP, and enzymes are joined into ATP Oh by the way… Alcohol waste is created

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  11. Quick Review • ATP is the energy molecule used by cells • When ATP is broken into ADP, energy is released • ATP can be rejoined through cellular respiration

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