1. Cell Theory and Cell Study

2. The Cell Theory / The cell is the basic unit of structure of all living things. / All living things are made up of cells. / The cell is the basic unit of function of all living things. / Cells come from pre-existing cells. / The cell is the basic unit of structure of all living things. / All living things are made up of cells. / The cell is the basic unit of function of all living things. / Cells come from pre-existing cells.

3. Exceptions to the Cell Theory / These are facts that can not be explained by the Cell Theory. / Viruses are not made up of cells, but they do contain genetic material. / The first cell could not have arisen from a previously existing cell, Scientists don’t know the origin of the first cell. / These are facts that can not be explained by the Cell Theory. / Viruses are not made up of cells, but they do contain genetic material. / The first cell could not have arisen from a previously existing cell, Scientists don’t know the origin of the first cell.

4. History of Cell Study / Scientists did not know much about cells until the discovery of the microscope. / Cells are so small they can not be seen w/o a microscope. / Anton van Leeuwenhoek- Dutch naturalist (1600’s). Developed the first microscope. / Robert Hooke- English (1665) was the first to develop a compound microscope. He came up with the term cell. / Scientists did not know much about cells until the discovery of the microscope. / Cells are so small they can not be seen w/o a microscope. / Anton van Leeuwenhoek- Dutch naturalist (1600’s). Developed the first microscope. / Robert Hooke- English (1665) was the first to develop a compound microscope. He came up with the term cell.

5. History cont….. / Robert Brown- (1831) discovered the nucleus of the cell. / Matthias Schleiden- (German, around 1830’s) a Botanist, concluded that all plants were made up of cells. / Theodor Schwann- (German, worked during the same time as Schleiden), studied animal cells. Concluded that animals were made up of cells. / Rudolf Virchow- (1858) concluded that all new cells must come from previously existing cells. / Robert Brown- (1831) discovered the nucleus of the cell. / Matthias Schleiden- (German, around 1830’s) a Botanist, concluded that all plants were made up of cells. / Theodor Schwann- (German, worked during the same time as Schleiden), studied animal cells. Concluded that animals were made up of cells. / Rudolf Virchow- (1858) concluded that all new cells must come from previously existing cells.

6. The Compound Microscope / Microscopes are used to study materials that can’t be seen with the naked eye. / Microscopes use two lenses (compound microscope) to increase the size of a specimen. / A specimen must be thin enough for light to pass through it. / The total magnification of an object is found by multiplying the magnification of the objective x the magnification of the eyepiece. / Microscopes are used to study materials that can’t be seen with the naked eye. / Microscopes use two lenses (compound microscope) to increase the size of a specimen. / A specimen must be thin enough for light to pass through it. / The total magnification of an object is found by multiplying the magnification of the objective x the magnification of the eyepiece.

7. Parts of the Microscope / Look on page 52 in UPCO. Make sure that you know the parts of the Microscope, and the function of each part!