Campbell Biology
Second Canadian Edition
Chapter 8
An introduction to
Metabolism
Copyright © 2018 Pearson Canada Inc. 8-1
,Key Concepts
• An organism’s metabolism transforms matter and energy
– subject to the laws of thermodynamics
• Enzymes speed up metabolic reactions by lowering energy
barriers
• Regulation of enzyme activity controls metabolism
,Overview: The Energy of Life (1 of 2)
• A living cell is a miniature chemical factory where
thousands of reactions occur
• The cell extracts energy stored in sugars and other energy
containing organic molecules, and applies energy to
perform work
, Overview: The Energy of Life (2 of 2)
• Some organisms even convert energy to light, as in
bioluminescence
Figure 8.1
Copyright © 2018 Pearson Canada Inc. 8-4
Second Canadian Edition
Chapter 8
An introduction to
Metabolism
Copyright © 2018 Pearson Canada Inc. 8-1
,Key Concepts
• An organism’s metabolism transforms matter and energy
– subject to the laws of thermodynamics
• Enzymes speed up metabolic reactions by lowering energy
barriers
• Regulation of enzyme activity controls metabolism
,Overview: The Energy of Life (1 of 2)
• A living cell is a miniature chemical factory where
thousands of reactions occur
• The cell extracts energy stored in sugars and other energy
containing organic molecules, and applies energy to
perform work
, Overview: The Energy of Life (2 of 2)
• Some organisms even convert energy to light, as in
bioluminescence
Figure 8.1
Copyright © 2018 Pearson Canada Inc. 8-4
