Monday, February 8, 2010

Cells

The cell is the basic unit of organization of organisms, all organisms are made up with one or more cell, also all cells come from preexisting cells. What is the organism(s) called that is made up of only one cell? The electron microscope was invented in the 1940's, The microscope can magnify up to 500 000 times its normal size. The Scanning electron Microscope scans the surface of cells to see their 3 detentions. The Transmission electron Microscope allows scientists to study the structure contained within a cell. Did you know that the cells that do NOT contain internal membrane bound structures are called Prokaryotic cells, the cells of most unicellular organisms such as bacteria do not have membrane bound structures (called Prokaryotic cells.) The cells that DO have membrane bound structures are called Eukaryotic Cells- Most of the Multi-Cellular plants and animals are made up of the Eukaryotic Cells. The membrane Bound structures within Eukaryotic cells are called organelles, each organelle has a specific meaning that helps the survival of all cells.

1 comment:

  1. You've done a good job of giving the details...from how the type of images the electron microscopes are capable of - to the difference in the terms prokaryotic and eukaryotic.

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