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• Cyclins accumulate during the G1, S, and G2 phases of the cell cycle. • By the G2 checkpoint (the red bar in the figure), enough Cyclin is available to form MPF complexes (aggregations of Cdk and Cyclin) which initiate mitosis.
o MPF apparently functions by phosphorylating key proteins in the mitotic sequence.
• Later in mitosis, MPF switches itself off by initiating a process which leads to the destruction of Cyclin
o Cdk, the non-Cyclin part of MPF, persists in the cell as an inactive form until it associates with new Cyclin molecules synthesized during Interphase of the next round of the cell cycle.
Define Protection of poly unsaturated fatty acids (PUFA) from oxidative damage? The major biological role of vitamin E is to protect PUFAs and other components of cell membrane
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A snapdragon plant that bred true for white petals was crossed to a plant that bred for purple petals, and all the F1 had white petals. The F1 was selfed. Among the F2, three other
what si tubal pregnancy ,
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Two dimension gene scanning technique is a high resolution system for finding of mutational variants in multiple genes. This method is on the basis of combination of extensive poly
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Given the cell described in Figure 7.7 with a=100mM, Pk=1.0, and PNa=0.04, at steady state, plot the relationship between Jp and V.
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