isthe process by which a parent cell divides into two or more daughter cells. Cell arise only from preexisting cells. Cell division plays several important roles inthe live of organism. Cell division on large scale allows some multicellular organism reproduce asexually (such as plants that grow from cuttings.) Among sexually reproducing organisms, cell division isthe basic ofspermandegg fo
menstruation normally but suffer from amenorrhea(absence of periods)
in later years
General factors
- thyroid disorders, adrenal disease
- presence of autoimmune antibodies
- heavy alcohol use, drugs, toxins (pesticides and lead), smoking,
medicines, radiation treatment, chemotherapy for cancer, etc.
-smokingreduces the age of menopause
ofcell division ccalled binary fission. In typical prokaryotes, most genes are carried on a circular DNA molecule that, associated protein, constitutes the organism's single chromosome. Although prokayotic chromosomes are much smaller than those of eukaryotes, duplicating them in an orderly fashion and distributing the copies equally to two daughter bacteria is still a formidable task.
eukaryo
cell" was proposed for scientific use by the Russian histologist Alexander Maksimov (1874–1928) at congress of hematologic society in Berlin. It postulated existence of haematopoietic stem cells.
1998 - James Thomson and coworkers derive the first human embryonic stem cell line at the University of Wisconsin–Madison.
2004–2005 - Korean researcher Hwang Woo-Suk claims to ha
of market size, target customer, and big competitor, we are going to do brief PEST and STP analysis. Andthen we move to our maintopic for communication strategy by using advertising course materials we learned before. Finally we suggest some future strategy for KT, showing the advertising we made. In short, understanding contents we learned in class, and applying them tothe real case is our ma