1 / 32

CELLULAR RESPIRATION chapter 9

CELLULAR RESPIRATION chapter 9. SC B-3.2 Summarize the basic aerobic & anaerobic processes of cellular respiration & interpret the equation. Chapter 9 Section 1. Essential Question: How would you distinguish the two main types of fermentation?. CELLULAR RESPIRATION.

aldon
Télécharger la présentation

CELLULAR RESPIRATION 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. CELLULAR RESPIRATIONchapter 9 SC B-3.2 Summarize the basic aerobic & anaerobic processes of cellular respiration & interpret the equation

  2. Chapter 9 Section 1 • Essential Question: • How would you distinguish the two main types of fermentation?

  3. CELLULAR RESPIRATION • IS THE PROCESS THAT RELEASES ENERGY BY BREAKING DOWN GLUCOSE IN THE PRESENCE OF OXYGEN

  4. Cellular Respiration Equation

  5. CELLULAR RESPIRATION: 4 PARTS • IN CYTOPLASM (ANAEROBIC) • GLYCOLYSIS • FERMENTATION • IN MITOCHONDRIA (AEROBIC) • KREBS CYCLE (aka CITRIC ACID CYCLE) • ELECTRON TRANSPORT CHAIN & CHEMIOSMOSIS

  6. GLYCOLYSIS • GLUCOSE ENTERS CELL VIA FACILITATED DIFFUSION • Performed by both prokaryotic and eukaryotic cells • GLUC  GLUCOSE-6-PHOSPHATE   2 PYRUVATE (3-carbon molecule) • COSTS THE CELL 2 ATP BUT MAKES 4 ATP (net gain of 2 ATP) • 2 NAD  2 NADH

  7. GLYCOLYSIS

  8. GLYCOLYSIS • WHAT IT NEEDS: • GLUCOSE • 2 ATP • 4 ADP + 4 P • 2NAD+ • WHAT IT MAKES: • 2- PYRUVATES • 2 ADP + 2 P • 4 ATP • 2 NADH

  9. FERMENTATION • ANAEROBIC • IN CYTOPLASM • NADH  NAD+ (which is used again in glycolysis) • 2 TYPES: • ALCOHOLIC • YEAST • BACTERIA • LACTIC ACID • ANIMAL MUSCLE FIBERS

  10. ALCOHOLIC FERMENTATION

  11. LACTIC ACID FERMENTATION

  12. Chapter 9 Section 2:Aerobic Respiration • Essential Question” • How is energy transferred through the various stages of aerobic cellular respiration?

  13. Structure of Mitochondria

  14. Mitochondrial Structure

  15. KREBS CYCLE: occurs in matrix • 2 PYRUVATE • ENTER MITOCHONDRIAL MATRIX •    6 CO2 • CITRIC ACID 1ST CPD FORMED HENCE aka CITRIC ACID CYCLE • KREBS CYCLE PRODUCTS: • 8 NAD+ 8 NADH • 2 FAD+ 2 FADH2 • 2 ATP • 6 CO2

  16. FOR EACH MOLECULE OF GLUCOSE: know what comes out the Krebs Cycle

  17. Krebs Cycle has many reactions (you do not need to know them) that releases the carbons from pyruvate as CO2 and transfers electrons & H+ to NAD+ and FAD NADH & FADH2

  18. What are NADH & FADH2? • they are very similar to NADPH in photosynthesis • They carry electrons from Kreb’sCycle to electron transport chain (that’sall you need to know about them)

  19. From the Krebs Cycle, NADH & FADH2 move to the inner membrane of the mitochondria (called the cristae) and transfer the electrons they are carrying to the electron transport chain in the cristae. • As the electrons move down the chain they lose energy some of which is used to move H+ from the matrix to the intermembrane space

  20. ELECTRON TRANSPORT CHAIN - 1 • Electron transport chain activities aka oxidative phosphorylation • hi energy e- move thru a series of e- carrier molecules in the cristae • energy from 2 e- transported down the electron transport chain  moves H+ across the membrane into the intermembrane space (aka the outer membrane space)

  21. Inner compartment = matrixouter compartment = intermembrane space (space between outer membrane of mitochondria and inner membrane or cristae

  22. Another look @ electron transport chain

  23. ELECTRON TRANSPORT CHAIN - 2 • Chemiosmosis: process in which the energy generated by oxidative phosphorylation generates a proton gradient across the cristae that drives the enzymatic synthesis of ATP • The cristae contain proteins called ATP SYNTHASE which act as a H+ CHANNEL PROTEIN (proton pump) & as an enzyme, ATP SYNTHASE

  24. Role of O2 • At the end of the e- transport chain O2 picks up the e- and combines with H+ to form H2O

  25. Animations of cellular respiration • http://vcell.ndsu.nodak.edu/animations/ • http://vcell.ndsu.nodak.edu/animations/etc/index.htm • http://www.wwnorton.com/college/biology/discoverbio4/animations/main.aspx?chno=ch08p02a

  26. Comparing Photosynthesis & Cellular Respiration PHOTOSYNTHESIS CELLULAR RESPIRATION • captures energy from the Sun • occurs in chloroplast • reactants: 6CO2 + 6H2O + light • products: C6H12O6 + 6O2 • releases energy from food • occurs in mitochondrion • reactants: C6H12O6 + 6O2 • products: 6 CO2 + 6 H2O + 36 ATP

  27. ANIMATIONS! • http://www.sp.uconn.edu/~terry/images/anim/ATPmito.html • http://www.science.smith.edu/departments/Biology/Bio231/ • http://www.johnkyrk.com/mitochondrion.html

  28. More Animations! (chapter review) • http://www.wwnorton.com/college/biology/discoverbio4/animations/main.aspx?chno=ch08p02a • http://www.wwnorton.com/college/biology/discoverbio4/animations/main.aspx?chno=ch08p02b • http://www.wwnorton.com/college/biology/discoverbio4/animations/main.aspx?chno=ch08p02c • http://www.wwnorton.com/college/biology/discoverbio4/animations/main.aspx?chno=ch08p02d

More Related