1. Notes: Cellular Respiration Finish Bioenergetics Foldable
Day 33
Notes: Cellular Respiration
Finish Bioenergetics Foldable

2. Bell Ringer: Day 33 Sketch each graph and explain what it shows:
photosynthesis
Rate of
photosynthesis
Rate of
Temperature
Light intensity
Finish this graph
Sketch what you think this graph should look like.
photosynthesis
Rate of
photosynthesis
Rate of
Amount of water
CO2 concentration

3. Cellular Respiration:
Breaking down glucose to form usable energy (ATP)

4. Mitochondria

5. Cellular Respiration
Happens in both plant and animal cells in the mitochondria
Overall Reaction:
C6H12O6 + 6O2 → 6CO2 + 6H2O (+ATP)

6. Cellular Respiration Overview
What type depends on whether or not there is oxygen
Aero = oxygen
Aerobic Respiration – makes the most energy
Anaerobic Respiration – “Fermentation” makes less energy, doesn’t use mitochondria

7. Step 1: Glycolysis Glycolysis breaks glucose apart into 2 molecules
makes 2 molecules of ATP (energy) and makes NADH which carries high energy electrons
happens in the cytoplasm of the cell

8. Step 2: Check for Oxygen
If oxygen is present, the cell can make more ATP by aerobic respiration
If no oxygen is present, the cell has to recycle the pieces from glycolysis by fermentation

10. Step 3 with oxygen: Cellular Respiration
Oxygen required=aerobic
2 more sets of reactions which occur the cell’s mitochondria
1. Kreb’s Cycle (citric acid cycle) – makes 2 ATP plus NADH and FADH2 which carry high energy electrons
2. Electron Transport Chain – makes ATP

11. Kreb’s Cycle (Citric Acid Cycle)

12. Electron Transport Chain

13. Step 3 without oxygen: Fermentation
The cell must recycle the materials from glycolysis.
This recycling process is called fermentation.
Produces NO MORE ATP
Happens in the cytoplasm

15. 2 types of fermentation
Lactic acid fermentation: done by some bacteria and in animal muscles.
produces lactic acid
this is what makes your muscles sore if you work out really hard
Alcoholic fermentation: done by yeast
produces ethanol and CO2
this is why bread rises

16. Energy Tally 36 ATP for aerobic vs. 2 ATP for anaerobic
Glycolysis ATP
Kreb’s ATP
Electron Transport 32 ATP
36 ATP
Anaerobic organisms can’t be too energetic but are important for global recycling of carbon