Cellular respiration
Download
1 / 16

CELLULAR RESPIRATION - PowerPoint PPT Presentation


  • 71 Views
  • Uploaded on

CELLULAR RESPIRATION. Chapter 9. Feel the Burn. When you exercise, your body uses O 2 to get energy from glucose. How do you feel after a long workout? What is happening to your cells and other organs? If you run as fast as you can for 100 m, could you keep up this pace for another mile?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' CELLULAR RESPIRATION' - ian-young


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Feel the burn
Feel the Burn

  • When you exercise, your body uses O2 to get energy from glucose.

  • How do you feel after a long workout?

  • What is happening to your cells and other organs?

  • If you run as fast as you can for 100 m, could you keep up this pace for another mile?


Chemical energy and food
Chemical Energy and Food

  • When burned in the presence of O2, 1 g of sugar can release 3811 calories of heat energy!

  • calorie – amount of energy needed to raise the temperature of 1 g of water 1◦C.

  • 1 Calorie (food label) = 1000 calories

  • Cells release energy from glucose in a process called cellular respiration.


Cellular respiration cr
Cellular Respiration (CR)

  • Process that releases energy by breaking down glucose using O2

  • Remember Photosynthesis… 6CO2 + 6H2O + E C6H12O6 + 6O2

  • Cell Respiration is sort of opposite!!!

    C6H12O6 + 6O2 6CO2 + 6H2O + ATP


3 steps of cellular respiration
3 Steps of Cellular Respiration

  • 1) Glycolysis

  • 2) Krebs Cycle

  • 3) Electron Transport Chain

Glucose

Krebs cycle

Electrontransport

Glycolysis


Cellular respiration1
Cellular Respiration

Mitochondrion

Electrons carried in NADH

Electrons carried in NADH and FADH2

Pyruvic acid

Electron Transport Chain

Krebs Cycle

Glucose

Glycolysis

Mitochondrion

Cytoplasm


Glycolysis
Glycolysis

  • Location: Cytoplasm

  • What happens: 1 6-C glucose is broken into 2 3-C pyruvic acid

  • More Products:

    • 2 ATP (use 2 but made 4) & NADH

Glucose

2 Pyruvic acid

To the electron transport chain


Krebs cycle citric acid cycle
Krebs Cycle - Citric Acid Cycle

  • Location: Mitochondria

  • What happens:

    pyruvic acid is broken down to CO2

  • Acetyl-CoA made in intermediate step

  • More products:

  • 2 ATP (from 2 turns of cycle)

  • NADH and FADH2


Electron transport chain etc
Electron Transport Chain (ETC)

  • Location: Mitochondria

  • What happens: electron carriers NADH + FADH2 deliver electrons used

    to make 32 more ATP

  • O2is the final electron acceptor

    • H+ and O2 makes water

      • This is kind of nice!


Aerobic vs anaerobic chemical pathways
Aerobic vs. Anaerobic Chemical Pathways

  • Energy production can happen with or without the presence of oxygen

    • Aerobic respiration – ATP production in the presence of oxygen (cell respiration)

    • Anaerobic respiration – ATP production in the absence of oxygen (called fermentation)


Aerobic vs anaerobic chemical pathways1

Glucose

Krebs cycle

Electrontransport

Glycolysis

Fermentation (without oxygen)

Alcohol or lactic acid

Aerobic vs. Anaerobic Chemical Pathways


Fermentation anaerobic respiration
Fermentation – Anaerobic Respiration

  • Regenerates NADH so that Glycolysis can continue

  • Makes 2 more ATP

  • 2 types


Alcoholic fermentation
Alcoholic Fermentation

  • Breaks down pyruvic acid and NADH into alcohol, CO2 and NAD+

    • Alcohol production, bread making

    • Makes 2 ATP


Lactic acid fermentation
Lactic Acid Fermentation

  • breaks down pyruvic acid and NADH into lactic acid and NAD+

    • Causes sore muscles, useful in cheese, yogurt, sour cream, pickles, sauerkraut production


ad