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How strong is an individual living cell? How is it moving and deforming? How can the cell fulfil its mechanical tasks? How is it communicating with its environment? The answer to such questions can be found in the interface between physics, cell biology and molecular biology � an internationally strongly growing research field. In this article we will focus on the first of the questions....
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A living organism is highly complicated and much of the knowledge we have, e.g., about our body, is based on observations rather than on understanding. In physics we primarily want to achieve understanding which is delicate in a complex living organism, since it is difficult to separate the most important from the less important parameters. Within the last decade the development of physical methods that enable us to study individual biological molecules has revolutionized our understanding of the working principles of individual molecules. However, once the function of an individual molecule is understood, the understanding of how many individual molecules form a living organism together and how they function within that organism poses an even greater challenge. Here, physicists can contribute for example with their knowledge about methods from statistical physics and complexity theory.
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