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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

  • 9–1 Chemical 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

  • 9–2 The 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

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________

slide19
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
slide24
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
slide26
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
slide27
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
slide28
Autotrophs…
      • Make their own food/chemical energy
  • Heterotrophs…
      • Must eat other things to obtain chemical energy
  • Aerobic respiration requires…
      • Oxygen
slide29
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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End of Custom Shows
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