Micronutrients in diet are essential for various cellular function. which divale
ID: 316750 • Letter: M
Question
Micronutrients in diet are essential for various cellular function. which divalent cation is essential in diet for the proper functioning of many signaling pathways? A. Ca^2+ B. Mg^2+ C. Fe^2+ D. Zn^2+ Answer the following questions briefly (In one or two sentences) X Y and Z are three components of a regulatory system. Both X and Y are transcription activators. How might X, Y and Z interact so as to form a sign sensitive delay element? Show graphically how such a sign sensitive delay element will effect gene expression While studying the regulation of two genes A and B, a scientist finds the steady state concentration of B to be much more susceptible to fluctuations compared to A? Why do you think this is the case? The rate of transcription of a gene Y was found to be reduced in a mutant cell line. However while mapping the mutation, it was found to be present not in gene Y but in gene X, which is a transcriptional activator of gene Y. Write down three possible effects that the mutation might be having on X, so as to reduce the transcription of Y.Explanation / Answer
In the context of a regulatory interaction, the steady state concentration of gene B is much more susceptible to fluctuations then gene A describes a narrow range of expression levels
within which gene B abundance is maintained despite small perturbations
in the expression of its regulatory TF.RNA concentration of gene B depends on transcription and degradation rates of gene B
This will depend on the kinetics of
synthesis and degradation of the target gene.