Presentation on theme: "1 Review What is a cell Explain What three statements make up the cell theory Infer How did the invention of the microscope help the development of the."— Presentation transcript:
11 Review What is a cell Explain What three statements make up the cell theory Infer How did the invention of the microscope help the development of the cell theory 2 Review How do microscopes work Apply Concepts What does it mean if a micrograph is “false-colored”
2Ch 7 Cell Structure and Function 7.1 Life is Cellular
3Robert Hooke 1665 used microscopes Looked in cork Used the word “cell.”
4Anton van Leeuwenhoek Early master lens maker Made early microscopes Looked at pondwater.
5Cell Theory The cell is the basic unit of life All living things are made up of at least one cellAll cells come from other cells.
6Compound Light Microscope Light waves pass through small organisms or thin slices of larger onesUp to 1500 times magnificationOurs magnify 400 timesUsed to see bacteriacells, and a few organelles.
7Stains and DyesIncreases contrast and detailCan see more organelles.
8Transmission Electron Microscope (TEM) Magnifies up to 1 million timesShows internal structuresSpecimen has to be dead.
9Scanning Electron Microscope (SEM) Magnifies up to 1 million timesShows the surface of the specimenUsed for cell surfaces, organelle membranes, virusesSpecimen may be living.