Cell Differentiation – Stem Cells• how specialized cells get produced• controlled by the cell’s DNA• stem cells are animal cells that can differentiate into many cell

types• 2 types of stem cells:

Embryonic – can differentiate into any kind of cell

Tissue – can only differentiate into certain types of cells, ex. umbilical cord blood

SPECIALIZED CELLS

• Many complex organisms, such as a human being or a

maple tree, begin life as a single fertilized egg or a single cell.

• The cells in a complex organism are not all identical. They perform different

functions so have a different designs or are specialized.

SPECIALIZED CELLS

• Plants also have specialized tissues

Structural Differences in Specialized Cells