Cellular Respiration - PowerPoint PPT Presentation

Loading...

PPT – Cellular Respiration PowerPoint presentation | free to download - id: 80cba5-Y2M0M



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Cellular Respiration

Description:

Title: Cellular Respiration Author: Christina Cooper Last modified by: CCSD Created Date: 1/28/2007 7:54:53 AM Document presentation format: On-screen Show (4:3) – PowerPoint PPT presentation

Number of Views:88
Avg rating:3.0/5.0
Slides: 12
Provided by: Christi1092
Learn more at: http://my.ccsd.net
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Cellular Respiration


1
Cellular Respiration
2
(No Transcript)
3
Cellular Respiration
  • The process in which mitochondria break down food
    molecules to produce ATP.
  • C6H12O6 6O2 ? 6CO2 6H2O ATP

4
Comparison of Photosynthesis Cellular
Respiration
Photosynthesis Cellular Respiration
Food synthesized Food broken down
Energy from sun stored in glucose Energy of glucose released
CO2 taken in CO2 given off
Oxygen given off Oxygen taken in
Produces sugars Produces CO2 H2O
Requires light Does not require light
Occurs only in presence of chlorophyll Occurs in all living cells
5
Cellular Respiration
  • 3 stages
  • Glycolysis (anaerobic)
  • Citric Acid Cycle (aerobic)
  • The Electron Transport Chain (aerobic)

6
Glycolysis
  • A series of chemical reactions in the cytoplasm
    of the cell that break down glucose.
  • 2 molecules of ATP are used to produce 4
    molecules of ATP
  • CO2 is given off.

7
The Citric Acid Cycle
  • Also called the Krebs cycle.
  • Similar to the Calvin cycle (Dark reaction)
  • 1 glucose molecule is broken down in 2 turns of
    the cycle.
  • Every 2 turn of the cycle 2 molecule of ATP and 4
    molecules of CO2 are produced.
  • 2 electron carriers are used NAD FAD
  • NAD ? NADH
  • FAD ? FADH2
  • The electron carriers each pass 2 energized
    electrons along to the electron transport chain.

8
Electron Transport Chain
  • NADH FADH2 deliver energized e- at the top of
    the chain.
  • Electrons are passed from protein to protein in
    the chain.

9
When no Oxygen is present
  • In the absence of oxygen an anaerobic process can
    produce small amounts of ATP to keep the cell
    from dying.
  • This process is called Fermentation.

10
Fermentation
  • Occurs during heavy exercise when your cells are
    without oxygen for a short period of time.
  • It follows glycolysis
  • Produces ATP until oxygen is available.
  • 2 types of fermentation
  • Lactic Acid Fermentation
  • Alcoholic Fermentation

11
Comparison of Fermentation to Cellular Respiration
Lactic Acid Fermentation Alcoholic Fermentation Cellular Respiration
glucose Glucose glucose
glycolysis Glycolysis glycolysis
CO2 CO2
Lactic Acid alcohol water
2 ATP 2 ATP 32 ATP
About PowerShow.com