1. Cell Structure and Function Lab 4

2. Cells  The cell is the basic unit of life.  Cell theory – all living things are composed of cells. Cells only come from other living cells. Some organisms consist of only one cell. Some have many cells.

3. Prokaryotic Cells  Cytoplasm is not compartmentalized. No internal organelles like a nucleus.  Prokaryotes include the two kingdoms of bacteria.  Bacteria are the simplest cellular organisms.

4. Prokaryotic Cells  Bacteria have a plasma membrane like all cells.  Cell wall (different than that found in plants or fungi)

5. Prokaryotic Cells  Bacteria have diverse array of shapes.  They can adhere in chains and masses, although the cells remain separate.

6. Eukaryotic Cells  Eukaryotes include all protists, fungi, plants, and animals.  Much larger than prokaryotic cells – complex internal compartmentalization. Membrane bound organelles – specialized structures where particular cell processes occur.  Largest organelle is usually the nucleus. Visit Cells Alive!!Cells Alive