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Interest Grabber. Section 9-1. Feel the Burn Do you like to run, bike, or swim? These all are good ways to exercise. When you exercise, your body uses oxygen to get energy from glucose, a six-carbon sugar.

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Interest grabber

Interest Grabber

Section 9-1

  • Feel the Burn

  • Do you like to run, bike, or swim? These all are good ways to exercise. When you exercise, your body uses oxygen to get energy from glucose,a six-carbon sugar.

1.How does your body feel at the start of exercise, such as a long, slowrun? How do you feel 1 minute into the run; 10 minutes into the run?

2.What do you think is happening in your cells to cause the changesin how you feel?

3.Think about running as fast as you can for 100 meters. Could youkeep up this pace for a much longer distance? Explain your answer.


Overall equation

OVERALL EQUATION

  • C6H12O6 + 6O2 6CO2 + 6H2O + energy(ATP)

  • Glucose + Oxygen  Carbon Dioxide + Water + ATP (Adenosine triphosphate)


Section outline

Section Outline

Section 9-1

  • 9–1Chemical Pathways

    A.Chemical Energy and Food

    B.Overview of Cellular Respiration

    C.Glycolysis

    1.ATP Production

    2.NADH Production

    D.Fermentation

    1.Alcoholic Fermentation

    2.Lactic Acid Fermentation


Section outline1

Section Outline

Section 9-2

  • 9–2The Krebs Cycle and Electron Transport

    A.The Krebs Cycle

    B.Electron Transport

    C.The Totals

    D.Energy and Exercise

    1.Quick Energy

    2.Long-Term Energy

    E.Comparing Photosynthesis and Cellular Respiration


Organelle of focus

ORGANELLE OF FOCUS


Figure 9 2 cellular respiration an overview

Figure 9–2 Cellular Respiration: An Overview

Section 9-1

Mitochondrion

Electrons carried in NADH

Electrons carried in NADH and FADH2

Pyruvic acid

Glucose

Electron Transport Chain

Krebs Cycle

Glycolysis

Mitochondrion

Cytoplasm


Chemical pathways

Chemical Pathways

Section 9-1

Glucose

Krebs cycle

Electrontransport

Glycolysis

Alcohol or lactic acid

Fermentation (without oxygen)


Flowchart

Flowchart

Section 9-2

Cellular Respiration

Glucose(C6H1206)

+

Oxygen(02)

Glycolysis

KrebsCycle

ElectronTransportChain

Carbon

Dioxide

(CO2)

+

Water

(H2O)


Figure 9 3 glycolysis

Figure 9–3 Glycolysis

Section 9-1

Glucose

2 Pyruvic acid

To the electron transport chain


Figure 9 3 glycolysis1

Figure 9–3 Glycolysis

Section 9-1

Glucose

2 Pyruvic acid

To the electron transport chain


Figure 9 3 glycolysis2

Figure 9–3 Glycolysis

Section 9-1

Glucose

2 Pyruvic acid

To the electron transport chain


Figure 9 6 the krebs cycle

Figure 9–6 The Krebs Cycle

Section 9-2

Citric Acid Production

Mitochondrion


Figure 9 6 the krebs cycle1

Figure 9–6 The Krebs Cycle

Section 9-2

Citric Acid Production

Mitochondrion


Check for understanding

CHECK FOR UNDERSTANDING

  • BEFORE WE GO ANY FURTHER – SEE HOW WELL YOU UNDERSTAND THE FIRST TWO STEPS IN CELLULAR RESPIRATION:

  • Answer the questions in your notes, use your textbook Ch9.


Figure 9 7 electron transport chain

Figure 9–7 Electron Transport Chain

Section 9-2

Electron Transport

Hydrogen Ion Movement

Channel

Mitochondrion

Intermembrane

Space

ATP synthase

Inner

Membrane

Matrix

ATP Production


Summary chart

Summary Chart

Total ATPS________


Summary

SUMMARY


Interest grabber

  • WHAT IF THERE ISN’T ANY OXYGEN?

  • CELLUAR RESPIRATION: Anaerobic (fermentation)

  • *yeast cells = alcohol production

  • *muscle cells = lactic acid production


Figure 9 4 lactic acid fermentation

Figure 9–4 Lactic Acid Fermentation

Section 9-1

Lactic acid

Glucose

Pyruvic acid


Figure 9 4 lactic acid fermentation1

Figure 9–4 Lactic Acid Fermentation

Section 9-1

Lactic acid

Glucose

Pyruvic acid


Figure 9 4 lactic acid fermentation2

Figure 9–4 Lactic Acid Fermentation

Section 9-1

Lactic acid

Glucose

Pyruvic acid


Pros and cons of lactic acid fermentation

Pros and Cons of Lactic Acid Fermentation

  • Pros – your muscle will keep working even without sufficient oxygen


Interest grabber

  • Cons – you feel it, lactic acid causes sore muscles and cramping

  • Your body will get rid of lactic acid – it diffuses into blood and goes to liver where it is converted back to pyruvic acid – ready for O2

LIVER


Recap 6c 6 h 12 o 6 6o 2 6co 2 6h 2 o energy atp

RECAP6C6H12O6 + 6O2 6CO2 + 6H2O + energy (ATP)

  • GLUCOSE becomes…

    • CO2

  • Oxygen is needed…

    • to accept the electrons at the end of ETC

  • CO2 goes…

    • into blood, lungs, exhaled

  • Water is produced when…

    • O2 collects enough e- and H+ to become water

  • ATP is produced…

    • in glycolysis, Kreb Cycle and mainly in ETC due to chemiosmosis


  • Interest grabber

    • Pyruvic acid is made …

      • at the end of glycolysis (3C)

  • NADH and FADH2 carry …

    • Electrons and H+ to the ETC

  • Protons (H+) build up in the …due to…

    • Intermembrane space, ETC pushing them out

  • ATP synthase allows H+ to … and …

    • Back into the matrix, produces ATPs

  • If no oxygen, yeast produce…

    • ethanol

  • If no oxygen, muscle cells produce…

    • Lactic acid


  • Interest grabber

    • The ETC produces...

      • 34 ATPs

  • In aerobic respiration, Pyruvic acid is converted to…

    • Acetyl CoA

  • The molecule that must be recycled in the Kreb cycle is…

    • Oxaloacetic acid

  • The break down of one glucose gives…

    • 38 total ATP


  • Interest grabber

    • Autotrophs…

      • Make their own food/chemical energy

  • Heterotrophs…

    • Must eat other things to obtain chemical energy

  • Aerobic respiration requires…

    • Oxygen


  • Interest grabber

    • VIDEO LINKS

    • FROM FOOD TO ATP

    • Cellular Respiration Overview


    Video contents

    Video Contents

    Video Contents

    • Click a hyperlink to choose a video.

    • Aerobic Respiration

    • Glycolysis

    • Krebs Cycle, Part 1

    • Krebs Cycle, Part 2

    • Electron Transport Chain, Part 1

    • Electron Transport Chain, Part 2


    Video 1

    Video 1

    Video 1

    • Click the image to play the video segment.

    Aerobic Respiration


    Video 2

    Video 2

    Video 2

    • Click the image to play the video segment.

    Glycolysis


    Video 3

    Video 3

    Video 3

    • Click the image to play the video segment.

    Krebs Cycle, Part 1


    Video 4

    Video 4

    Video 4

    • Click the image to play the video segment.

    Krebs Cycle, Part 2


    Video 5

    Video 5

    Video 5

    • Click the image to play the video segment.

    Electron Transport Chain, Part 1


    Video 6

    Video 6

    Video 6

    • Click the image to play the video segment.

    Electron Transport Chain, Part 2


    Internet

    Internet

    Go Online

    • Links from the authors on Creatine

    • Share kimchi lab data

    • Interactive test

    • For links on cellular respiration, go to www.SciLinks.org and enter the Web Code as follows: cbn-3091.

    • For links on the Krebs cycle, go to www.SciLinks.org and enter the Web Code as follows: cbn-3092.


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