What do you think of when you hear the word CELL? Cell Theory With your table, you will have 3.5 minutes to view each of the next 3 slides and answer the questions posed in your notebook. Work as a group. 1. Is this living or non-living? Why do you think that? 2. Is this living or non-living? Why do you think that? 3. Is this living or non-living? Why do you think that? What were some common features in the 3 pictures? What were some different features in the 3 pictures? Which 1 picture was NOT living? Why? What things do these cells have in common? You will work with your partner to complete the webquest regarding the Cell Theory. Warm up: 1. What makes something living? 2. What is the most basic unit of living things? Cell Theory...The major players Hans and Zacharias Janssen 1590's Dutch father and son Spectacle-makers Experimented with lenses in a tube First compound microscope . Robert Hooke 1665 English Observed slices of cork Named them "cells" Francesco Redi 1668 Italian Biogenesis Life comes from life Anton van Leeuwenhoek Dutch 1674 Used a very simple microscope Described single-celled organisms Called them animalcules Robert Brown 1831 Scottish Discovered the nucleus in plant cells Matthias Schleiden German 1838 Botany (plants) Plants are made of cells Theodor Schwann German 1839 Animals are made of cells Cell is basic unit of animal structure "Schwann Cells" (nerve cells) Rudolph Virchow German 1855 "Think Microscopically" Cells come from other cells Cells get sick; not the whole organism Louis Pasteur French 1864 Disproved Spontaneous Generation The Cell Theory 1.All organisms consist of 1 or more cells 2. Cells are the basic unit of structure and function in a living thing 3. All cells come from pre-existing cells Prokaryote vs Eukaryote Cytoplas m Prok aryot e Euka ryote Cell Membran e Nucleu s Organelle s DN A Ribosome s EXAMPLES What makes a virus different from bacteria? Specialized cells... Function: Form fits function: Function: Form fits function: Function: Form fits function: Function: Form fits function: Warm up 2. Name at least 1 scientist who contributed to cell theory and explain his contribution. Use the sites linked to our class webpage to identify cell parts in plant and animal cells. Define the functions and answer the questions. Why are cells so small???? How does the size of a blue whale cell compare to the size of a tadpole cell? What makes a blue whale different from a tadpole when considering cells?