1. Three broad categories of cells with different division activity within multi-cellular organism Lost the ability to undergo division remaining in: extreme specialization state until they die. E. g. nerve cells, muscle cells. or red blood cells Cells that normally do not divide, but can be induced to begin DNA synthesis by some appropriate stimulus. E. g liver cells lymphocytes Cells that normally possess continually a relatively high and level of mitotic activity. Gonial cells, bone marrow stem cells, epithelial cells, and apical meristem cell of plants1.Three broad categories of cells with different division activity within multi-cellular organism: · Lost the ability to undergo division remaining in extreme specialization state until they die. E.g. nerve cells, muscle cells, or red blood cells. · Cells that normally do not divide, but can be induced to begin DNA synthesis by some appropriate stimulus. E.g. liver cells lymphocytes. · Cells that normally possess continually a relatively high and level of mitotic activity. Gonial cells, bone marrow stem cells, epithelial cells, and apical meristem cell of plants