1 / 30

Chapter 9

What happens to all that glucose that was made in photosynthesis?. Chapter 9. Cellular Respiration. How does your body tell you that you are hungry?. Shakes. Gets sleepy. Growling tummy. FOOD!. Serves as a source of raw material for cells to make new molecules Provides ENERGY.

annice
Télécharger la présentation

Chapter 9

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. What happens to all that glucose that was made in photosynthesis? Chapter 9 Cellular Respiration

  2. How does your body tell you that you are hungry? Shakes Gets sleepy Growling tummy

  3. FOOD! • Serves as a source of raw material for cells to make new molecules • Provides ENERGY

  4. 9.1 Cellular Respiration • A process that releases energy by breaking down glucose & other food molecules with oxygen present

  5. Photosynthesis Equation C6H12O6 6 CO2 + 6 H20 6 O2 + Respiration equation its the exact reverse!

  6. 3 Stages of AEROBIC (with oxygen) Respiration Click Me! 1) Glycolysis 2) Kreb's Cycle 3) Electron Transport Chain (ETC)

  7. Cellular Respiration Here, your body makes ATP * is like going to work... to use whenever you need energy! You go to work to make money! Then you save the $$ for your future! Remember me??

  8. #1 Glycolysis • Occurs in the cytoplasm of cells • Glucose (6- Carbons) is split… • Into 2 pyruvic acid (3- Carbon compound) molecules • 2 ATP molecules are used to ultimately make 4 ATP molecules • How many ATP’s will we end up making? 2

  9. PYRUVIC ACID Glucose is broken down into 2 pyruvic acids… so 6 carbon, 6 oxygen, and 8 hydrogen. What’s missing? Let’s do some counting! I’m a 3-carbon molecule! 3 carbons 3 Oxygens 4 Hydrogens

  10. 4 Hydrogens are missing!!! An NAD+ (electron carrier) molecule takes 2 high energy electrons (Hydrogens) NAD+ becomes NADH A total of 2 NADH are made in glycolysis Glycolysis- Part DEUX

  11. Let's Review! Glycolysis • There are 3 stages of aerobic cellular respiration _________, _________ and ________________. • Glycolysis starts with a _________ molecule and ends with 2 _________ acids and 2 electron carriers called ________ • Glycolysis also uses 2 ATP's to get started, but produces ____ so we get ____ overall. Kreb's Cycle Electron Transport Chain glucose pyruvic NADH 4 2

  12. After glycolysis, before Kreb's • 2 pyruvic acid molecules are broken down into a 2-carbon molecule called Acetyl-CoA • 2 CO2 are released • And 2 NADH molecules are formed • 2 Acetyl-CoA enter the Kreb’s cycle

  13. Occurs in the mitochondria Acetyl-CoA is broken down to produce 4 CO2, 6 NADH, 2 FADH2 and 2 ATP 9.2 The Krebs Cycle

  14. Every time you exhale you are releasing Carbon dioxide. This is a byproduct of the Krebs cycle. Your cells use the ATP created for cellular activities.

  15. Electron Transport Chain • Electrons (hydrogen atoms) are passed from their carriers (NADH & FADH2) along the electron transport chain • This produces 32 ATP • At the end of the chain oxygen is the final hydrogen acceptor producing _________

  16. Graphic goes here Courtney

  17. Cellular Respiration Tally How much energy does cellular respiration produce??? 1) Glycolysis: Produces 2 ATP per Glucose 2) Krebs Cycle =2ATP 3) Electron Transport Chain: 32 ATP molecules per Glucose Grand Total = 36 ATP

  18. That’s more efficient than your car!!!

  19. Instead of pyruvic acid entering the mitochondria, fermentation occurs in the cytoplasm It is known an anaerobic respiration There are 2 types: Alcoholic Lactic Acid 9.1 What happens if oxygen is not available after glycolysis???

  20. Aerobic • Anaerobic-fermentation

  21. Alcoholic Fermentation • Yeasts form ethyl alcohol and CO2 as waste products. • Why does bread dough rise? • What happens to the alcohol? It evaporates when you cook it!

  22. Pyruvic acid + NADH yields alcohol + CO2 + NAD+ • NOTICE! No more ATP production!

  23. Lactic Acid Fermentation • In many cells the pyruvic acid that accumulates can be converted into lactic acid. • Pyruvic acid + NADH yields lactic acid + NADH+ • NOTICE! No more ATP production!

  24. What causes your body to be sore after physical activity??? Get outta my way DONKEY!

  25. Unicellular organisms produce lactic acid too! • Prokaryotes are used in the production of foods like cheese, yogurt, sour cream, and pickles • What’s a prokaryote dude?

  26. Aerobic Anerobic

More Related