Chapter 9 - Chapter 9 Cellular Respiration Outline -...

Info iconThis preview shows pages 1–18. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 9 Cellular Respiration
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Outline - Cellular Respiration Catabolic Pathways Oxidation/Reduction Reactions Cellular Respiration Glycolysis Citric Acid Cycle Electron Transport Chain and Ox-Phos Related Metabolic Processes
Background image of page 2
Fig 9.2 Energy Flow and Chemical recycling in Ecosystems • sunlight provides energy • energy is stored in organic molecules • organisms utilize the organic molecules to obtain energy
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Energy Metabolism Organic molecules energy stored in the arrangement of atoms degradation by enzymes releases energy (catabolism) released energy is used by the cell to do work some is lost as heat
Background image of page 4
Catabolism Metabolic pathways that release energy Fermentation partial degradation of sugars in the absence of oxygen (anaerobic) Cellular Respiration complete breakdown of sugars in the presence of oxygen (aerobic) occurs mostly in the mitochondria in eukaryotes
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Basics of Cellular Respiration Organic Compounds + Oxygen Carbon dioxide + Water + Energy (ATP + heat) (sugars, fats, proteins)
Background image of page 6
Basics of Cellular Respiration Glucose + Oxygen Carbon dioxide + Water + Energy ∆G = -686kcal/mole
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Basics of Cellular Respiration C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + Energy (ATP and heat) ∆G = -686kcal/mole
Background image of page 8
ATP - the energy molecule Adenosine triphosphate chemical equivalent of a loaded spring three, closely packed, negatively- charged phosphate groups unstable energy-storing arrangement
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Oxidation-Reduction (redox) Reactions Catabolic pathways release energy that is used to synthesize ATP also relocate the electrons stored in food molecules
Background image of page 10
Oxidation-Reduction (redox) Reactions transfer of one or more electrons from one reactant to another oxidation-reduction reactions Also known as “redox” reactions . The loss of electrons is called oxidation . The addition of electrons is called reduction
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Oxidation-Reduction (redox) Reactions Oxidation Loss of electrons from one substance Reduction Addition of electrons from another substance Na + Cl Na + + Cl - oxidation reduction
Background image of page 12
Oxidation-Reduction (redox) Reactions Na + Cl Na + + Cl - Xe - + Y X + Ye - Reducing Agent - electron donor (X) Oxidizing Agent - electron acceptor (Y) oxidation reduction
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Redox Reactions Reducing Agent Donates an electron undergoes oxidation causes something else to be reduced Oxidizing Agent Accepts an electron undergoes reduction causes something else to be oxidized
Background image of page 14
Redox Reactions Don’t have to involve complete transfer of electrons May involve a change in the degree of electron sharing in covalent bonds. nonpolar bonds to polar bonds
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fig 9.3 Methane combustion as an energy-yielding redox reaction (nonpolar) (polar)
Background image of page 16
Redox Reactions In nonpolar to polar shift of bonding Electrons shift closer to the more electronegative atom lose energy in shift from a less electronegative to a more electronegative atom
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 18
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/29/2009 for the course BIOL 213 taught by Professor Dalmet during the Spring '07 term at George Mason.

Page1 / 87

Chapter 9 - Chapter 9 Cellular Respiration Outline -...

This preview shows document pages 1 - 18. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online