CHAPTER 8.1, 8.3

CHAPTER 8.1, 8.3 - CHAPTER 8 SECTIONS 8.1 AND 8.3 An...

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CHAPTER 8 SECTIONS 8.1 AND 8.3 An introduction to metabolism and ATP
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OVERVIEW: THE ENERGY OF LIFE The living cell is a miniature chemical factory where thousands of reactions occur. The cell extracts energy and applies energy to perform work. Some organisms even convert energy to light, as in bioluminescence.
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BIOLUMINESCENT FUNGI WHY??
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SOME OTHER BIOLUMINESCENT CREATURES
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METABOLISM Metabolism is the totality of an organism’s chemical reactions. Metabolism is an emergent property of life that arises from interactions between molecules within the cell.
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METABOLIC PATHWAYS A metabolic pathway begins with a specific molecule and ends with a product. Each step is catalyzed by a specific enzyme. Enzyme 1 A B Reaction 1 Enzyme 2 C Reaction 2 Enzyme 3 D Reaction 3 Product Starting molecule
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Catabolic pathways release energy by breaking down complex molecules into simpler compounds (breakdown pathway). Anabolic pathways consume energy to build complex molecules from simpler ones (biosynthetic pathway). Bioenergetics is the study of how organisms manage their energy resources.
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FORMS OF ENERGY Energy is the capacity to cause change (perform work).
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This note was uploaded on 03/30/2012 for the course BI 107 taught by Professor Fuller during the Fall '08 term at Montgomery College.

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CHAPTER 8.1, 8.3 - CHAPTER 8 SECTIONS 8.1 AND 8.3 An...

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