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11: Metabolism

Last updated

Aug 11, 2024
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- 10.9: Key Terms
- 11.1: Introduction

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11.1: Introduction
Virtually every task performed by living organisms requires energy. Energy is needed to perform heavy labor and exercise, but humans also use a great deal of energy while thinking, and even during sleep. In fact, the living cells of every organism constantly use energy. Nutrients and other molecules are imported, metabolized (broken down) and possibly synthesized into new molecules, modified if needed, transported around the cell, and may be distributed to the entire organism.
11.2: Energy and Metabolic Pathways
11.3: Potential, Kinetic, Free, and Activation Energy
Energy is defined as the ability to do work and exists in different forms. For example, electrical energy, light energy, and heat energy are all different types of energy. While these are all familiar types of energy that one can see or feel, there is another type of energy that is much less tangible. To appreciate the way energy flows into and out of biological systems, it is important to understand more about the different types of energy that exist in the physical world.
11.4: Enzymes
11.5: Enzyme Regulation
11.6: Key Terms
11.7: Chapter Summary

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