When bone marrow cells go through the cell cycle, the two identical daughter cells that result form mitosis have very different functions. Following g1, one daughter cell leaves the cell cycle and becomes a specialized blood cell. The second marrow cell remains in the marrow as a stem cell and repeats the cell cycle. What molecule is responsible for determining the fate of each cell?

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the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.