chapter_8 - Energy and Work energy Chapter 8 Metabolism:...

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1 1 Chapter 8 Metabolism: Energy, Enzymes, and Regulation 2 Energy and Work energy capacity to do work or to cause particular changes 3 Types of work carried out by organisms chemical work synthesis of complex molecules transport work take up of nutrients, elimination of wastes, and maintenance of ion balances mechanical work movement of organisms or cells and movement of internal structures 4 The processes used by organisms to obtain energy and to do chemical work are the basis of the functioning of ecosystems.
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2 5 Energy currency of cells ATP used to transfer energy from cell’s energy- conserving systems to the systems that carry out cellular work Figure 8.2 6 The cell’s energy cycle Figure 8.3 7 Free Energy and Reactions Δ G = Δ H - T• Δ S expresses the change in energy that can occur in chemical reactions and other processes used to indicate if a reaction will proceed spontaneously 8 Δ G = Δ H - T• Δ S Δ G free energy change
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chapter_8 - Energy and Work energy Chapter 8 Metabolism:...

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