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- What is meant by G0 Phase? What is the significance of cells that are permanently in this phase?why is it relevant to know the prevalence of premature rupture of membranes in adolescent pregnancy vs adult pregnancy?Among the following patterns, which is likely to represent the phenomenon of senescence? Please note that the x-axis represents the age and the y-axis the number of offspring (the solid lines) or the probability of survival (the dashed lines). (A) (B) (C) (D) O A B None of the above
- Among the following patterns, which is likely to represent the phenomenon of senescence? Please note that the x-axis represents the age and the y-axis the number of offspring (the solid lines) or the probability of survival (the dashed lines). (A) (B) (C) (D) D None of the aboveIn neurulation, what cell types are involved? What morphogens are present (and antagonists)? What transcription factors are there? What tissues/tissue types are there? What are the signaling pathways used and how do each function? What's the end goal, and what is the response in development? Draw a labeled diagram or detailed flow chart of neurulation in embryos to show this.(FYI, this is one practice question. No grading involved.)What are the major differences between cells undergoing replicative senescence versus cell crisis?
- 3) At the completion of meiosis, how many sets of chromosomes does each daughter cell contain? 1 2 3 4 4) Imagine that a cell within a tissue is expressing a protein that leaves the cell and can “signal” to other cells. Which cells will respond? A) Cells that are within range of the signaling molecule and have protein receptor that binds the signaling molecule B) Cells that are within range of the signaling molecule C) Cells that are within range of the signaling molecule and are expressing their own signaling molecules D) Cells that are within range of the signaling molecule and are the same type of cellThe Rb protein has been called the “master brake” of the cell cycle. Describe how the Rb protein acts as a cell cycle brake. How is the brake released in mid- to late G1 to allow the cell to proceed to S phase?Cell differentiation occurs through _______________, whereas morphogenesis involves _______________. (a) pattern formation; cell determination (b) cell division; cell expansion (c) cell expansion; pattern formation (d) cell determination; cell division (e) cell determination; pattern formation