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The imidazole side chain of the hemoglobin beta chain residue His-β146 has a pKa of 7.9 when in the T state (shown below). Determine how its ionization state will change and how it will affect its interaction with the Asp-β94 side chain as the pH shifts from 7.2 in the muscle to 7.4 in the lungs. Enter Increase, Not change, or Decrease. 1b86.png ​Prompt ​Response ​His-β146 imidazole ionization state will ​[BLANK-1] ​His-β146 imidazole interaction with Asp-β94 side chain will ​ [BLANK-2]

The muscle enzyme hexokinase catalyzes the phosphorylation of glucose, where KM = 0.05 mM with respect to glucose. Select the effect on v0 of the hexokinase-catalyzed reaction when glucose concentration increases from 5 mM to 10 mM.

Print out and complete the following test: Unit 05 Test – Tryggvi-1.pdf   Please upload your work here in a single pdf file.

By adding one horizontal line to the diagram, find the value of x:     Click ‘True’ when finished

Without using dot products, determine whether the angle XYZ is a right angle, if X = (3, -5, 4); Y = (-2, -2, -2) and Z = (1, 5, -1)     Click ‘True’ when finished

A triangle is drawn with angles 31 degrees at vertex A and 51 degrees at vertex B.  If an altitude is drawn from the third vertex C and is extended until it intersects a line parallel to CA at point D, find the measure of angle BDC.   Click ‘True’ when finished

If the midpoints of the three sides of a triangle are given as (2, 6) (-6, 4) and (10, -2), find the locations of the three vertices.   Click ‘True’ when finished

What is {x} + {y} with the correct number of significant figures?

In the periodic table elements are sorted into rows and columns, what are these rows and columns called?

What is the particle that defines which element an element is?