Ch9 Respiration

Ch9 Respiration - 11/10/10 Cellular Respiration Chapter 9...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Click to edit Master subtitle style 11/10/10 Cellular Respiration   Chapter 9 PowerPoint Lectures for  Biology  8th edition
Background image of page 1

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

View Full DocumentRight Arrow Icon
11/10/10 Overview: Life Is Work Living cells require energy from outside sources Cells break down organic molecules to obtain  energy Some animals, such as the giant panda, obtain  energy by eating plants, and some animals feed on  other organisms that eat plants
Background image of page 2
11/10/10 Concept 9.1: Catabolic pathways yield  energy by oxidizing organic fuels Several processes are central to cellular respiration  and related pathways Fermentation  is a partial degradation of sugars  (organic molecules) that occurs without O2 Aerobic respiration  consumes organic molecules and  O2 and yields ATP Anaerobic respiration  breaks down organic  molecules, similar to aerobic respiration, but consumes  compounds other than O2 to yield ATP The breakdown of organic molecules is exergonic
Background image of page 3

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

View Full DocumentRight Arrow Icon
11/10/10 Cellular respiration  includes both  aerobic and  anaerobic  respiration but is often used to refer  only to aerobic respiration – NOT OK Definition:  The conversion of energy in the chemical  bonds of nutrients (carbs) to a different form of  chemical energy, ATP Cellular respiration differs from gas exchange  associated with  organismic respiration  - breathing Although carbohydrates, fats, and proteins are 
Background image of page 4
11/10/10 Redox Reactions: Oxidation and  Reduction The transfer of electrons during chemical  reactions releases energy stored in organic  molecules This released energy is ultimately used to synthesize  ATP Chemical reactions that transfer electrons  between reactants are called oxidation-reduction  reactions, or  redox reactions In  oxidation , a substance loses electrons, or is  oxidized
Background image of page 5

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

View Full DocumentRight Arrow Icon
11/10/10 Redox Reactions: Oxidation and  Reduction
Background image of page 6
11/10/10 Redox Reactions: Oxidation and  Reduction Some redox reactions do not transfer electrons  but change the electron sharing in covalent bonds Reduction is the  gain of a bond  (acceptance of  energy in the form of electrons) Oxidation is the  breaking or loss of a bond  (loss or  donation of energy in the form of electrons)
Background image of page 7

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

View Full DocumentRight Arrow Icon
11/10/10 Redox Reactions: Oxidation and  Reduction
Background image of page 8
11/10/10 Aerobic Respiration Is a Redox Reaction Breakdown (oxidation) of glucose Breaking of the glucose bonds yields electrons  (energy) Energy is transferred from glucose in the form of electrons to  NAD and FAD to form NADH and FADH2 and make ATP Overall Reaction for Aerobic Respiration
Background image of page 9

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

View Full DocumentRight Arrow Icon
11/10/10 Cellular Respiration Electron/Hydrogen Carriers NAD/NADH, FAD/FADH2 Electron transfer = energy  transfer Electron transfer is often seen 
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 42

Ch9 Respiration - 11/10/10 Cellular Respiration Chapter 9...

This preview shows document pages 1 - 11. Sign up to view the full document.

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