2. Learning Target: Cells & Cell Theory I Can…Identify characteristics common to all cells and describe key differences between two broad categories of cells. To achieve this, I Will… List the three parts of the cell theory Name characteristics common to all cells Compare/Contrast eukaryotic and prokaryotic cell characteristics

3. CAPT Standard 10.1 – Fundamental life processes depend on the physical structure and chemical activities of the cell. Expected Performance D 27 – Describe the similarities and differences in the basic structure of plant and animal cells.

4. Contributions in developing Cell Theory: Came from Many scientists Improvements in microscope technology

5. Cell Theory – Unifying Biological Concept 1.All living things are made of cells 2.All cells are produced from other cells (all cells come from other living cells) 3.The cell is the basic unit of life

6. Cell Characteristics: Most cells tend to be: Microscopic All cells must have: A cell membrane Cytoplasm

7. Two Broad Categories of Cells: Prokaryotic No nucleus No membrane-bound organelles DNA is free within cytoplasm Only single-celled microscopic organisms Prokaryotic No nucleus No membrane-bound organelles DNA is free within cytoplasm Only single-celled microscopic organisms Eukaryotic Nucleus Membrane-bound organelles DNA is within nucleus May be single-celled microscopic organisms OR multicellular macroscopic organisms Eukaryotic Nucleus Membrane-bound organelles DNA is within nucleus May be single-celled microscopic organisms OR multicellular macroscopic organisms A good video that compares and contrasts prokaryotic and eukaryotic cells can be found on YouTube at: https://www.youtube.com/watch?v=RQ- SMCmWB1s