1 / 28

Cellular Respiration Unit

Cellular Respiration Unit. Overview of Respiration. aerobic = requires oxygen to occur (ex: cellular respiration) vs. anaerobic = does not require oxygen to occur (ex: glycolysis and fermentation). Overview of Respiration (cont). Organic Compounds. Glycolysis. ATP.

mireya
Download Presentation

Cellular Respiration Unit

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cellular Respiration Unit

  2. Overview of Respiration aerobic = requires oxygen to occur (ex: cellular respiration) vs. anaerobic = does not require oxygen to occur (ex: glycolysis and fermentation)

  3. Overview of Respiration (cont) Organic Compounds Glycolysis ATP Oxygen Present Oxygen Absent Fermentation (anaerobic) Cellular Respiration (aerobic) No ATP ATP

  4. Glycolysis - takes place in the cytoplasm of cells - always occurring and does not require oxygen - occurs before cellular respiration or fermentation

  5. Glycolysis (cont) - 2 ATP are used to start process - breaks down glucose into a net of 2 ATP, 2 pyruvate, and 2 NADH - Why is there a net of 2 ATP?

  6. Glycolysis (cont) - Why is there a net of 2 ATP? Used Made 4 - 2 = 2

  7. Glycolysis (cont) - products (pyruvate and NADH) enter either cellular respiration or fermentation - Efficiency = 3.5 % (only 2 ATP are made)

  8. Overview of Cellular Respiration = releases chemical energy from sugars and other organic compounds to make ATP when oxygen is present

  9. Overview of Cellular Respiration (cont) - occurs in the mitochondria of cells

  10. Overview of Cellular Respiration 1) Mitochondria 2) Pyruvate (from glycolysis) 3) Krebs Cycle takes place in matrix of mitochondria 4) ATP and CO2 5) Movement to Stage 2 6) Energy from Krebs Cycle & O2 7) ATP and H20

  11. Overview of Respiration Organic Compounds Glycolysis ATP Oxygen Present Oxygen Absent Fermentation (anaerobic) Cellular Respiration (aerobic) No ATP ATP

  12. Cellular Respiration – 2 Stages * occurs in the mitochondria 1) Krebs Cycle = produces molecules that carry energy to the second stage of cellular respiration

  13. Cellular Respiration – 2 Stages (cont) - pyruvate from glycolysis is broken down - some ATP and other energy forms are made - carbon dioxide is given off as a waste product

  14. Krebs Cycle

  15. Cellular Respiration – 2 Stages (cont) 2) Electron Transport Chain - made of proteins - uses energy from Krebs cycle and oxygen to make ATP - water and heat are given off as waste products

  16. Electron Transport Chain

  17. Cellular Respiration – 2 Stages (cont) Efficiency of Cellular Respiration = 66% (38 ATP are made)

  18. Equation for Cellular Respiration Reactants Products C6H12O6 + 6O2 6 CO2 + 6 H2O (sugar = (oxygen) (carbon (water) glucose) dioxide)

  19. Fermentation - starts with glycolysis - does not make ATP (but allows glycolysis to continue)

  20. Overview of Respiration Organic Compounds Glycolysis ATP Oxygen Present Oxygen Absent Fermentation (anaerobic) Cellular Respiration (aerobic) No ATP ATP

  21. Fermentation (cont) Types 1) Lactic Acid Fermentation - occurs in your muscle cells - produces lactic acid, results in muscle fatigue and cramps - produces NAD+ that goes back to glycolysis

  22. Lactic Acid Fermentation

  23. Fermentation (cont) 2) Alcoholic Fermentation - produces alcohol (ethyl) and carbon dioxide - produces NAD+ that goes back to glycolysis

  24. Alcoholic Fermentation

  25. Importance of Fermentation - produces food products we use (bread, cheese, yogurt) - allows glycolysis to continue - microorganisms in digestive tract break down food (allows more nutrients to be absorbed)

More Related