1. Cellular Respiration Reminder for note-taking:
The Blue words are headings
The green words are bullet points
The black & red words are just extra details & do not need to be written down
Cellular Respiration 1

2. Aerobic Cellular Respiration
An oxygen (O2) requiring process that uses energy extracted from macromolecules (glucose) to produce energy (ATP) and water (H2O) and carbon dioxide (CO2).
Chemical Formula:
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
glucose
ATP 2 2

3. Question:
In what kinds of organisms does cellular respiration take place? 3 3

4. In what kinds organisms does cellular respiration take place?
Plants - Autotrophs: self-producers.
Animals - Heterotrophs: consumers. 4 4

5. Mitochondria Organelle where cellular respiration takes place. 5 Inner
membrane space
Matrix
Cristae
Outer
membrane
Inner
membrane 5 5

6. Breakdown of Cellular Respiration
3 main parts (reactions).
1. Glycolysis (splitting of sugar)
a. In cytoplasm (just outside of mitochondria.) 6 6

7. Breakdown of Cellular Respiration
2. Krebs Cycle (Citric Acid Cycle)
a. In mitochondrial matrix
3. Electron Transport Chain (ETC) a. Also called Chemiosmosis
b. In inner mitochondrial membrane. 7

8. In Eukaryotes (have Membrane-bound organelles)
Total ATP produced (from Aerobic Cellular Respiration)
02 ATP - glycolysis (substrate-level phosphorylation)
04 ATP - converted from 2 NADH - from glycolysis
06 ATP - converted from 2 NADH - from glycolysis
02 ATP - Krebs cycle (substrate-level phosphorylation)
18 ATP - converted from 6 NADH - Electron Transport Chain
04 ATP - converted from 2 FADH2 - Electron Transport Chain
36 ATP - TOTAL 8

9. Maximum ATP Yield for Cellular Respiration (Eukaryotes)
Glucose
Glycolysis
2ATP ATP 6ATP 18ATP ATP ATP
2 ATP
(substrate-level
phosphorylation)
2NADH
6NADH
Krebs
Cycle
2FADH2
2 Pyruvate
2 Acetyl CoA
ETC and Oxidative
Phosphorylation
Cytosol
Mitochondria 9
36 ATP (maximum per glucose)

10. Anaerobic Respiration: Fermentation
Occurs in cytoplasm when “NO Oxygen” is present
Remember: glycolysis is part of fermentation.
Two Types:
1. Alcohol Fermentation
2. Lactic Acid Fermentation 10

11. Alcohol Fermentation Ex: Plants and Fungi → beer, wine, & bread 2ATP C
glucose
Glycolysis C
C C
2 Pyruvic
acid
2ATP
2ADP
+ 2
2NADH P
2 NAD+ C
2 Ethanol
2CO2
released
2NADH
2 NAD+ 11

12. Alcohol Fermentation End Products of Alcohol fermentation:
2 - ATP (substrate-level phosphorylation)
2 - CO2
2 - Ethanol’s 12 12

13. Lactic Acid Fermentation
Ex: Animals (causes pain in muscles after a workout).
Glucose
Glycolysis C
2 Pyruvic
acid
2ATP
2ADP
+ 2
2NADH P
2 NAD+
C C
2 Lactic
acid
2NADH
2 NAD+ C 13 13

14. Lactic Acid Fermentation
End Products of Lactic acid fermentation:
2 - ATP (substrate-level phosphorylation)
2 - Lactic Acids 14

15. Question:
In addition to glucose, what other various food molecules are use in Cellular Respiration? 15

16. Catabolism (Breakdown) of Various Food Molecules
Other organic molecules used for fuel.
1. Carbohydrates: polysaccharides
2. Fats: glycerol’s and fatty acids
3. Proteins: amino acids 16