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1 Review What happens to pyruvic acid in the Krebs cycle Interpret Visuals Look at the diagram of the Krebs cycle. List all the products that are made and include what happens to each one 2 Review How does the ETC use the high energy electrons from glycolysis and the Krebs cycle Relate Cause and Effect How does the cell use the charge differences that build up across the inner mitochondrial membrane during cellular respiration

Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

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Page 1: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

1 Review What happens to pyruvic acid in the Krebs cycle

Interpret Visuals Look at the diagram of the Krebs cycle. List all the products that are made and include what happens to each one

2 Review How does the ETC use the high energy electrons from glycolysis and the Krebs cycle

Relate Cause and Effect How does the cell use the charge differences that build up across the inner mitochondrial membrane during cellular respiration

Page 2: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

CH 9 CELLULAR RESPIRATION AND FERMENTATION

9.2 The Process of Cellular Respiration

Page 3: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Glycolysis First stage of cellular

respiration Glucose is broken

down into 2 molecules of the 3-carbon molecule pyruvic acid

ATP and NADH are produced.

Page 4: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Glycolysis Cells “deposits” 2 ATP

to start glycolysis.

Page 5: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Glycolysis

Produces 4 ATP molecules Net gain of 2 ATP for each

glucose.

Page 6: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Glycolysis

NAD+ accepts a pair of high-energy electrons and becomes NADH Happens twice Goes to ETC.

Page 7: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Glycolysis

Produces ATP very fast Does not need oxygen.

Page 8: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Krebs Cycle

Pyruvic acid is broken down into carbon dioxide

A.k.a. Citric Acid Cycle ATP is produced.

Page 9: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Krebs Cycle 1 Pyruvic acid from

glycolysis enters the matrix of the mitochondrion.

Page 10: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Krebs Cycle 2 Enzymes split CO2 off

from pyruvic acid Leaves 2 carbon

molecule NADH is produced form

NAD+.

Page 11: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Krebs Cycle 3 2 carbon molecule joins

a 4 carbon molecule to make citric acid.

Page 12: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Krebs Cycle 4 Citric acid (6 carbon)

becomes a 4 carbon molecule

More NADH and CO2 are made.

Page 13: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Krebs Cycle 5 More reactions capture

energy as ATP, NADH, and FADH2.

Page 14: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Krebs Cycle 6

4 carbon molecule goes through cycle again.

Page 15: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Krebs Cycle

Each glucose molecule will make two turns of the Krebs cycle

Each glucose molecule will make 2 ATP molecules 8 NADH molecules 2 FADH2.

Page 16: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Electron Transport

NADH and FADH2 pass their electrons to ETC.

Page 17: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Electron Transport

Electrons combine with H+ ions and oxygen to form water at end of ETC.

Page 18: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Electron Transport

The high energy electrons move H+ ions against a concentration gradient across the inner mitochondrial.

Page 19: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Electron Transport

H+ ions pass back through the ATP synthase causing it to spin

ATP synthase attaches a phosphate to ADP to produce ATP with each rotation.

Page 20: Ch 9 Cellular Respiration and Fermentation€¦ · PPT file · Web view2014-05-05 · Title: Ch 9 Cellular Respiration and Fermentation Author: Dan Last modified by: Holly Created

Energy Totals Complete breakdown

of glucose through cellular respiration results in the production of 36 ATP molecules

The rest of the energy is “lost” as heat (64%).