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1. Look up the pKas of glutamic acid and draw thestructures for the predominant forms of glutamic acid at pH 1.0, pH3.0, pH 7.4, and pH 12. Examine the structures and determine thenet charge of glutamic acid at each of these pHs. The pH at whichthe predominant form of an amino acid has a net of 0 is known asthe pI. Estimate the pI of glutamic acid.
Where might you find vine plants? Why do epiphytes and succulents share similar stem structures, and is there some similarity in the conditions under which the two plants grow? are there other groups of plants that exhibit secondary growth other t..
how does DNA replication ensure genetic constancy during cell division.
Explain in your own words what is meant by wild type. Include frequency in your explanation and use human blood type genotypes to demonstrate your knowledge of this material.
Two dissimilar inbred strains of mice, A and B, are crossed to yield an F1 hybrid strain, AB. Suppose if a large dose of spleen cells from an adult A mouse is injected into an adult AB mouse,
Describe, using a sketch/diagram, how a double strand DNA break can be produced by a two-hit process when using high energy electrons from a high energy linear accelerator used to irradiate mammalian cells.
Explain the roles of the CAP binding site and the operating site in relationship to the 3 proteins required for growth on lactose. Why aren't these proteins produced all the time? Explain the differences in function when glucose is absent and lact..
An SDS-PAGE gel is run of proinsulin and insulin.Samples were treated with beta-mercaptoethanol prior to electrophoresis.Draw a picture of the predicted results.
What is the approximate molecular weight of a protein with 682 amino acid residues in a single polypeptide chain?
What are the roles of the cell surface, the cytoskeleton and intercellular signaling in development? Include examples from gastrulation, induction, morphogenesis and axis formation.
If a cell is maintaining 200 proteins with an average AA length of 75 AA what is the total number of bases used to encode specifically for the proteins?
Discuss and explain the role of Maternal Affect Genes, Gap Genes, and Pair-rule genes in the anterior-posterior patterning of the Drosophila embryo.
Determine that human activities have caused the extinction of thousands of species annually; whereas, the natural rate of extinction is thought to be a few species every year.
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