Cellular Respiration: Harvest Chemical Energy with the Cell

1
Cellular Respiration Harvest Chemical Energy
with the Cell

• Chapter 9

2
All Cells Need Energy To Survive!
3
Flow of Energy with an Ecosystem
4
Cellular Respiration is Catabolic

• Recall catabolism
• Some processes to harvest energy from food
  require oxygen while others do not
• Aerobic
• Anaerobic

5
Redox Reactions are Essential!
6
Cellular Respiration occurs in Steps!
7
Coenzymes are electron shuttles!
8
Overview of Cellular Respiration
9
Substrate-Level Phosphorylation
10
GLYCOLYSIS
11
Citric Acid Cycle Intermediate Step
12
Citric Acid Cycle
13
Electron Transport Chain
14
Chemiosmosis
15
ATP Synthase
16
Summary of Cellular Respiration
17
What happens when no O2 is available?
18
What happens when no O2 is available?
19
Pyruvate is important juncture.
20
Other sources of fuel
21
Feedback Mechanisms