1-4 Tools and Procedures.

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Presentation transcript:

1-4 Tools and Procedures

A Common Measurement System Metric system: based on decimals and used throughout the world Units of the Metric system: meter (length) m liter (volume) L or l gram (mass) g o Celsius (temperature) o C

Microscopes Light microscopes: produce an image by focusing light rays. Page 1064-1065…using microscopes. Electron microscopes: produce an image by focusing beams of electrons. Examples: SEM (scanning electron microscope) TEM (transmission electron microscope)

Lab Techniques Cell cultures: scientists allow one cell in a lab to reproduce to develop into a group of cells (a culture). Cell fractionation: cells are broken into small pieces, separated and examined separately. Chromatography: separates liquid or gas mixtures

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