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The starting point for a question like this is to differentiate the function - in this case the curve y=3x² -7x+5 . We calculate that dy/dx=6x-7 . The question tells us that we are interested i...

Let's begin by assessing the molecule. If we divide the molecular weight by two, that will give us the weight for one strand of the helix. Knowing that one nucleotide is 333 g/mol, then dividing the wei...

Firstly, using Beer-Lambert's equation. It is noted, that absorption is equal to the molar extinction coefficient, multiplied by the path length of light, multiplied by the concentration of the solution.T...

This identity can easily be shown by asking the student to draw a right-angled triangle, with one of the remaing two angles labelled x, and labelling the respective oppposite, adjacent and hypotenuse side...

The greatest problem with the quantitative reasoning section is without a doubt the time pressure. One of the ways to tackle this is to be able to quickly ascertain which questions will take too much of y...