Chapter 7 A Tour of the Cell

Chapter 7 A Tour of the Cell - Chapter 7 A Tour of the Cell...

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Chapter 7 A Tour of the Cell Lecture Outline Overview: The Importance of Cells All organisms are made of cells. Many organisms are single-celled. Even in multicellular organisms, the cell is the basic unit of structure and function. The cell is the simplest collection of matter that can live. All cells are related by their descent from earlier cells. Concept 7.1 To study cells, biologists use microscopes and the tools of biochemistry The discovery and early study of cells progressed with the invention of microscopes in  1590 and their improvement in the 17 th  century. In a light microscope (LM), visible light passes through the specimen and then through  glass lenses. The lenses refract light such that the image is magnified into the eye or onto a video  screen. Microscopes vary in magnification and resolving power.
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Chapter 7 A Tour of the Cell - Chapter 7 A Tour of the Cell...

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