Learning Target: Cell Theory I Can…Identify characteristics common to all cells and describe key differences between two broad categories of cells.

I Will…• List the three parts of the cell theory• Name characteristics common to all

cells• Compare/Contrast eukaryotic and

prokaryotic cell characteristics

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.

Contributions in developing Cell Theory:

Came from • Many scientists• Improvements in microscope

technology

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

Cell Characteristics:

Most cells tend to be:• MicroscopicAll cells must have:• A cell membrane• Cytoplasm

Two Broad Categories of Cells: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