What are Totipotent Cells?
Totipotent cells are undifferentiated, non specialised cells. Initially, cells can become any type of cell (muscle, epithelial, etc.). Totipotent cells do not yet have a function.
Which cells in plants and animals are totipotent?
Fertilized egg cells.Embryonic Stem cells. Meristematic Cells in plants.
How do cells loose totipotency and become speicialised?
Cells become specialised because some genes become switched off/left on. This means that not all of the cells code for the same proteins, and therefore, have different constitutions, and have different functions due the the varying frequencies of the avaliable proteins.
How can stem cells treat human disorders?
Stem Cells can treat human disorders as they are undifferentiated. A factor can be used to force the cells to differentiate into particular cells - giving the avaliability to re-grow tissues that have been damaged, either by accidents, or via degenrative disease. For example, nerve cells being produced can combat the prgressions of diseases such as Parkinson's, Alzheimers, MS, and strokes.
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