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ATP hydrolysis

Campbell9thEdChapter8Introduction to Metabolism

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metabolism
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Adenosine triphosphate
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ATP hydrolysis
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Allosteric regulation
Endergonic

An Introduction to Metabolism Chapter 8 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 ? 2011 Pearson Education, Inc. Figure 8.1 Concept 8.1: An organism?s metabolism transforms matter and energy, subject to the laws of thermodynamics 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 ? 2011 Pearson Education, Inc. Organization of the Chemistry of Life into Metabolic Pathways A metabolic pathway begins with a specific molecule and ends with a product

BIO CH 8

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Enzyme catalysis
Enzyme
Adenosine triphosphate
Endergonic reaction
ATP hydrolysis
energy

Campbell's Biology, 9e (Reece et al.) Chapter 8 An Introduction to Metabolism This chapter lays the foundations for the chapters on respiration and photosynthesis. Key concepts are as follows: The laws of thermodynamics govern energy transformations by living organisms, metabolic reactions couple energy-harvesting reactions to reactions that accomplish cellular work, and enzymes increase the rates of reaction. Understanding the properties of enzymes, how they work, and how their activities are regulated is necessary to achieve an understanding of metabolic pathways. Multiple-Choice Questions 1) Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? A) catalysis B) metabolism C) anabolism D) dehydration E) catabolism

Cell Bio chapter 8

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Non-competitive inhibition
ATP hydrolysis

Concept 8.1 What is energy? Potential energy = stored energy Chemical bonds Concentration gradients (can be used to do cellular work) Electrical potential Kinetic energy = movement energy Heat = molecular motion Mechanical = moving molecules past each other Electrical = moving charged particles Forms of energy Biker at top of hill potential Biker going down hill kinetic Why do cells need energy? Synthetic work = building macromolecules (e.g., making protein) mechanical work = moving molecules past each other e.g., muscle shortening concentration work = creating chemical gradients e.g. storing glucose electrical work = creating ion gradients e.g., unequal distribution of sodium and potassium ions Metabolic pathways Catabolic pathways ? release energy

Campbell Biology Chapter 8 Outline

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Chemistry
Biology
metabolism
cellular respiration
Catalysis
Exercise physiology
Enzymes
Bioenergetics
Enzyme
Chemical reaction
Adenosine triphosphate
ATP hydrolysis

Mica Piro Chapter 8: An Introduction to Metabolism An organism?s Metabolism Transforms Matter and Energy, Subject to the Laws of Thermodynamics (8.1) The totality of an organism?s chemical reactions is called metabolism It is an emergent property of life that arises from orderly interactions between molecules Organization of the Chemistry of Life into Metabolic Pathways A metabolic pathway begins with a specific molecule, which is then altered in a series of defined steps, resulting in a certain product Each step is catalyzed by a specific enzyme Metabolism as a whole manages the material and energy resources of the cell Some pathways release energy by breaking down complex molecules to simpler compounds?these degraditive processes are called catabolic pathways, or breakdown pathways
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