1. 2007-08 Cellular Respiration Unit 2: Cells Chapter 9-1

2. Learning Goals 1.Explain the process of cellular respiration including the equation with reactants and products. 2.Describe the 3 steps for cellular respiration including location, reactants and products, and amount of ATP produced. 3. Draw the mitochondria and label its parts. 2007-08

3. Cellular Respiration break down food (glucose) ATPMitochondria break down food (glucose) molecules to make ATP –ATP –ATP will provide energy for other processes Occurs in the mitochondriaOccurs in the mitochondria The Chemical Equation C 6 H 12 O 6 + 6 O 2  6 CO 2 + 6 H 2 O + energy C 6 H 12 O 6 + 6 O 2  6 CO 2 + 6 H 2 O + energy Glucose + Oxygen  Carbon dioxide + Water + Energy

4. Flow Map Here is the chemical equation: C 6 H 12 O 6 + 6 O 2  6 CO 2 + 6 H 2 O + energyC 6 H 12 O 6 + 6 O 2  6 CO 2 + 6 H 2 O + energy From MEMORY (without using your notes), write out the word equation and draw pictures to complete the picture equation.From MEMORY (without using your notes), write out the word equation and draw pictures to complete the picture equation. You WILL need to memorize this equation as well as the photosynthesis equation so practice (quiz yourselves)You WILL need to memorize this equation as well as the photosynthesis equation so practice (quiz yourselves) 2007-08

5. Mitochondria Outer membraneOuter membrane = outside of mitochondria Inner membraneInner membrane = wavy inner layer –Cristae –Cristae = folds of the inner membrane –Matrix –Matrix = the space within the inner membrane

6. 2007-08 Overview: 3 steps 1. Glycolysis 2. Krebs Cycle 3. Electron Transport Chain (ETC)

7. 2007-08 1. Glycolysis GlucoseGlucose split into two pyruvate –Anaerobic –Anaerobic = no oxygen is required Takes place in the cytoplasm (outside mitochondria)Takes place in the cytoplasm (outside mitochondria) 2ATPs2 ATPs are made 2 ATP Glucose (6 carbons) 2 Pyruvates (3 carbons)

8. 2007-08 Glycolysis: takes place in the cytoplasm

9. 2007-08 2. Krebs Cycle Pyruvate broken into CO 2Pyruvate broken into CO 2 NADH & FADH 2 are made (stored energy) matrixOccurs in the matrix of the mitochondria. 2ATP’s2 ATP’s are made

10. 2007-08 Kreb’s Cycle : occurs in the mitochondria’s matrix Matrix

11. 2007-08 3. Electron Transport Chain (ETC) Most of the ATP energy of cellular respiration is made by the ETCMost of the ATP energy of cellular respiration is made by the ETC –Energy from NADH & FADH 2 pumps H + across the cristae, helping make ATP AerobicAerobic = oxygen is required –O 2 H 2 O –O 2 accepts the H + at the end of the ETC to make H 2 O +

12. 2007-08 Occurs in the cristae of the mitochondria.Occurs in the cristae of the mitochondria. About 32 ATPs are made!!!About 32 ATPs are made!!! Electron Transport Chain: occurs in the mitochondria’s cristae Cristae: Inner Membrane

13. 2007-08 Cellular Respiration: Cellular Respiration: Total amount of ATP made from Total amount of ATP made from 1 glucose = 36 ATP’s

14. 2007-08

15. Fermentation Anaerobic Respiration notAnaerobic Respiration: releases energy from food when O 2 is not available. smallAllows for the cell to continue making a small amount of ATP. –Produces 2 ATP per 1 glucose molecule

16. 2007-08 Fermentation v. Respiration

17. 2007-08 Comparing Photosynthesis and Cellular Respiration

18. Learning Goals 1.Explain the process of cellular respiration including the equation with reactants and products. 2.Describe the 3 steps for cellular respiration including location, reactants and products, and amount of ATP produced. 2007-08