Cell Structure & Function

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Cells are the basic units of structure and function in living things
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Presentation transcript:

Cell Structure & Function Discovering Cells Chapter 1 Section 1

Cells The basic units of structure and function in living things

First Sightings of Cells The invention of the microscope made it possible for people to discover and learn about cells

Compound Microscope A light microscope with more than 1 lens Can magnify up to 10,000x Good for… Cells Small Organisms

Robert Hooke 1663, English Scientist 1 of the 1st people to observe cells Cork cells  “Rectangular rooms”

Anton van Leeuwenhoek 1683, Dutch Businessman Observed… Pond water “Animalcules”  little animals Teeth scum bacteria

Cell Theory 3 Key Points… All living things are composed of cells Cells are the basic unit of structure and function in living things All cells are produced from other cells

Magnification The lens or lenses in a light microscope magnify an object by bending the light that passes through them Convex lenses

Resolution The sharpness of an image

Electron Microscopes Use a beam of electrons to examine a specimen Can magnify up to 1,000,000x Good for… Viruses Bacteria Cell organelle

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