TAILIEUCHUNG - Lecture Biology (7th edition) - Chapter 8: An introduction to metabolism

This chapter presents the following content: An organism’s metabolism transforms matter and energy, subject to the laws of thermodynamics, the free-energy change of a reaction tells us whether the reaction occurs spontaneously, ATP powers cellular work by coupling exergonic reactions to endergonic reactions,.and another contents. | Lecture Biology (7th edition) - Chapter 8: An introduction to metabolism Chapter 8 An Introduction to Metabolism PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece Lectures by Chris Romero Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Overview: The Energy of Life • The living cell – Is a miniature factory where thousands of reactions occur – Converts energy in many ways Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Some organisms – Convert energy to light, as in bioluminescence Figure Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Concept : An organism’s metabolism transforms matter and energy, subject to the laws of thermodynamics Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Metabolism – Is the totality of an organism’s chemical reactions – Arises from interactions between molecules Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Organization of the Chemistry of Life into Metabolic Pathways • A metabolic pathway has many steps – That begin with a specific molecule and end with a product – That are each catalyzed by a specific enzyme Enzyme 1 Enzyme 2 Enzyme 3 A B C D Reaction 1 Reaction 2 Reaction 3 Starting Product molecule Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Catabolic pathways – Break down complex molecules into simpler compounds – Release energy Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Anabolic pathways – Build complicated molecules from simpler ones – Consume energy Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Forms of Energy • Energy – Is the capacity to cause change – Exists in various forms, of which some can perform .

• Sinh học
• Campbells Biology
• Lecture Biology
• Biological sciences
• Biological organization
• Systems biology
• Metabolism transforms matter
• Restoration ecology
• Conservation biology
• Ecosystem dynamics
• The chemical context of life
• Water molecules
• The molecular diversity of life
• Function of macromolecules
• Membrane structure
• Cellular respiration
• Chemical energy of food
• Cell communication
• The cell cycle
• Sexual life cycles
• The gene idea
• Locating genes
• The molecular basis of inheritance
• Genetic information
• Microbial model systems
• Eukaryotic genomes
• DNA technology
• The genetic basis of development
• Darwin’s theory
• The evolution of populations
• The origin of species