Presentation on theme: "Mr. Stoll and Miss Else Biology Room 314"— Presentation transcript:
1 Mr. Stoll and Miss Else Biology Room 314 Cells and Cell TheoryMr. Stoll and Miss ElseBiologyRoom 314
2 Cell TheoryCells are the basic units of structure and function in living thingsALL LIVING THINGS ARE MADE UP OF CELLS!Two objects were invented in Holland ~1600’s: a telescope and a microscope
3 Van Leeuwenhoek Van Leeuwenhoek was the first to observe living cells He studied bacteria from teeth and protozoa from pond waterHe used the microscope to study MICROORGANISMS
4 Hooke Hooke used the microscope to study plant stems, wood and cork Unable to observe living cells, but named them “chamber cells”First to pioneer the study of cells
5 Other discoveries…Robert Brown saw a dark structure near center of the cell, the nucleusMatthias Schleiden stated all plants are made up of cellsTheodor Schwann stated animals are made up of cells too.
6 Cell Structures The cells of all organisms have 3 basic structures: Cell MembraneNucleusCytoplasmThere are a few that are different from plant to animal cells:Plants have Cell Walls and Vaculoes, animals cells DO NOT