How is the orientation of cell division related to cell fate / cell lineage in C. elegans?
How is the orientation of cell division related to cell fate / cell lineage in C....
Which of the following plays little role in the development of the nervous system of C. elegans, given that cell fate is closely regulated by the mitotic lineage in this species? Select one: Cell–cell interaction Induction All of these are correct Regulation In a frog, the segregation of inputs from two eyes that are forced to innervate a single optic tectum requires__________. Select one: visual stimulation apoptosis both induction and apoptosis induction
Which of the following is true regarding the lineage decisions during T cell development? Notch ligands produced by DCs lead to the commitment of ETPs to the T cell fate A. Notch ligands expressed by thymic epithelial cells lead to the commitment of ETPs to the T cell fate B. Wnt ligands expressed by thymic epithelial cells lead to the commitment of ETPs to the T cell fate C. B and C D. None of the above E.
Compare and contrast the role of Notch/Delta signaling in Drosophila neural stem cell (NSC) and C. elegans germline stem cell (GSC) fate specification
A) Assuming the life of a cell starts as soon as cell division is completed and ends when the cell starts a new process of cellular division, how many times in a cell’s life does it replicate its DNA? Explain. B) How is DNA replication related to mitosis? C) When does a multicellular organism undergo mitosis (when it wants to reproduce, all the time, only when injured, when it’s growing, or when)?
Explain how cell fate is determined by 4 main mechanisms: graded amounts of regulator molecules, temporal effects, position effects, mechanical signals.
1. How do Cerberus, Noggin, Chordin, BMPs and Wnt establish cell fate along the Dorsal-ventral and anterior-posterior axis?
1. how is tubulin used in cell division 2. how oncovin binds to tubulin and leads to prevention of cell division
1. Describe how normal cellular processes (cell division and metabolism) contribute to aging. 2. Why are aging-related diseases, such as Alzheimer's, Parkinson's, cataracts, arthritis, osteoporosis, and cancer, becoming so common in the modern era?
Explain how the abnormal cell division of cancerous cells escapes normal cell cycle controls.
What are kinases and growths factors? How do they relate to cell division?