1. Metabolism The sum total of ALL chemical reactions within a cell
Catabolic
Anabolic

2. Oxidation/reduction reactions

3. Biological Oxidation

4. ATP is made in catabolic reactions and used in anabolic reactions

5. Ways cells make ATP Substrate level phosphorylation
Oxidative phosphorylation
Photophosphorylation

6. Types of Bacterial Metabolism
Fermentation
Respiration
Aerobic Respiration
Anaerobic Respiration
Photosynthesis

7. Keep in mind…glucose becomes many different things

8. Fermentation
The incomplete breakdown of glucose with an organic compound serving as the final electron acceptor
Only pathway operating is glycolysis

10. Fermentation

11. Lactic Acid Bacteria

12. Saccharomyces produces ethanol

13. Fermentation products can vary

14. Aerobic Respiration
The COMPLETE breakdown of glucose to CO2 and H2O with an inorganic compound serving as the final electron acceptor

15. Remember the pathways in aerobic respiration are…
Glycolysis
Some use Pentose Phosphate Pathway instead
TCA cycle
Electron transport chain

18. What is made as a result of the TCA cycle?
ATP
Reducing power
Precursor metabolites made from alpha-ketoglutarate and oxaloacetate

19. Electron Transport Chain
Found in the cytoplasmic membrane
Contains electron carriers
Flavoproteins
Iron-sulfur proteins
Quinones
Cytochromes

20. Model for energy release in ETC

21. ETC in prokaryotes

23. ATP yield from aerobic respiration

24. Comparison of three types of metabolism

25. Remember we are focusing on catabolic reactions
Generate ATP for later use by cell
Generate precursors for other pathways
Need to re-oxidize coenzymes for continual use

26. Precursor metabolites