chapter 8 an introduction to metabolism
DESCRIPTION
Chapter 8 An Introduction To Metabolism. Metabolism. Catabolic Pathways. Anabolic Pathways. Energy. Kinetic Energy. Potential Energy. Activation Energy. Activation Energy. Potential Energy. Energy Transformation. 1st Law of Thermodynamics. 2nd Law of Thermodynamics. - PowerPoint PPT PresentationTRANSCRIPT
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Chapter 8 An Introduction To
Metabolism
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Metabolism
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Catabolic Pathways
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Anabolic Pathways
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Energy
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Kinetic Energy
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Potential Energy
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Activation Energy
Potential Energy
Activation Energy
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Energy Transformation
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1st Law of Thermodynamics
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2nd Law of Thermodynamics
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Entropy
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Summary
The quantity of energy in the universe is constant, but its quality is not.
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Free Energy
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Free Energy
G = H - TS
G = free energy of a system
H = total energy of a system
T = temperature in oK
S = entropy of a system
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Free Energy of a System
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Free Energy Changes
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Spontaneous Process
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Chemical Reactions
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Reaction Types
Exergonic:
Endergonic:
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Exergonic/Endergonic
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Biological Examples
Exergonic –
Endergonic -
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Cell - Types of Work
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Energy Coupling
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ATP
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Adenine
Ribose
Phosphates
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Key to ATP
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ATP
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ATP vs Food
ATP:
Food:
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ATP Cycles
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ATP Cycle
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ATP in Cells
A cell's ATP content is recycled every minute.
Humans use close to their body weight in ATP daily.
No ATP production equals quick death.
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Enzymes
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Chemical Reaction
AB + CD AC + BD
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Enzymes
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Enzyme Terms
Substrate –
- ase
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Enzyme Name
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Active Site
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Models of How Enzymes Work
1.
2.
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Lock and Key Model
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Induced Fit Model
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Substrate
Active Site
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Enzymes
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Factors that Affect Enzymes
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Environment
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Cofactors
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Coenzymes
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Enzyme Inhibitors
Competitive
Noncompetitive -
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Allosteric Regulation
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Allosteric Regulation
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Control of Metabolism
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Types of Control
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Feedback Inhibition
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Structural Order
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Summary
Recognize that Life must follow the Laws of Thermodynamics.
The role of ATP in cell energy.
How enzymes work.