BIOLOGY 151 Lecture Notes - Eukaryote, Cellular Differentiation, Blastocyst
Document Summary
Have the potential to cure certain diseases (such as. Prokaryotes do not have a membrane bound nucleus while eukaryotes do. The vast majority of prokaryotes are unicellular while most eukaryotes are multi-cellular. Embryonic stem cells: totipotent: can give rise to any type of tissue in the body including those cell types associated with the placenta. Has this ability only until the eight cell stage embryo: pluripotent: (after this eight cell stage) embryo will reorganize until the blastocyst 5 days. Can give rise to any cell except for cells in the placenta: multipotent (not embryonic): have the ability to give rise to multiple, but limited cell types. Very hot topic: tem cell research was restricted during the bush years, obama lifted these restrictions, recent us district court ruling blocked funding. Stem cell can either go about self-renewal or regenerate itself or form into a differentiated cell. Expression of different genes lead to cell differentiation:
