This document provides an overview of cell theory and the key differences between prokaryotic and eukaryotic cells. It discusses how cell theory was developed through the early observations and experiments of scientists like Hooke, Redi, Schleiden, Schwann, and Virechow. The three main principles of cell theory are introduced: 1) All organisms are made of one or more cells, 2) The cell is the basic unit of life, and 3) All cells come from preexisting cells. Prokaryotic cells are described as smaller, simpler cells without nuclei or membrane-bound organelles, like bacteria. Eukaryotic cells are larger, more complex cells that have nuclei and membrane-bound organelles

1. ZOOLOGY!!!! 3…2..1.HERE WE GO! My hypothesis: expect a test in 3-4 weeks

2. Common Scientific Laws and Theories:

3. What we will be focusing on today: Scientific Method Theory Vs. Law SC.912.L.14.2: Describe the scientific theory of cells (cell theory and relate the history of its discovery to the process of science Going over how we take notes in this class

4. Explore: Cell Theory Be the next Redi… 1.) Start with an observation that evokes a question - for each observation write one inference 2.) Use logic and previous knowledge to state a Possible answer = Hypothesis: 3.) Perform an experiment or test 4.) Publish your findings: (aka write all of this down) 5.) Verification by other scientists: make sure that Your other group members test your experiments and agree on the conclusions 6.) Test and retest… and retest.. And test again if multiple experiments continue to support your Hypothesis you have a theory! How certain are you of your answers: 10%, 90% sure? What other types of tests would you like to do (besides opening the bag and looking inside) to be able to tell what is inside? (x-ray, scale, etc)

7. Theory vs. Law How I think of it…. The biggest difference between a theory and a law is: that a theory is much more complex and dynamic - A law describes a single action. Theory describes an entire group of related phenomenon Analogy: A law is a sling shot: one moving part. It is what it is. Predictable. A theory is an automobile: complex piece of machinery. Sometimes improvements Are made to one or more components but the function remains the same

8. Cell Theory

11. Redi’s Experiment…

23. Unit 5 – Cell Specialization Cell Theory Plant vs Animal Cells Eukaroytic vs Prokaryotic

38. Is it prokaryotic or eukaryotic?

39. Is it prokaryotic or eukaryotic?