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The binomal system was invented by Carl Linnaeus in the 1700s. Latin binomials are names we use to identify different species. They come in two parts ('bi' means two, and 'nomial' means name) which identi...
For a sample containing chiral carbons to have no effect on plane polarised light there must be an equal amount of each enantiomer in the sample. Enantiomers rotate plane polarised light by the sa...
The question asks you to complete the square on the function f(x). First, we split the function:
f(x) = (x^2 + 5x) + 9
And recognise that we need the form (x^2 + 2k + k^2). Identifying 2k = ...
I wake up in a daze. I am breathing but just about. My hand is red - I'm bleeding. What happened? My eyes open slowly to realise the train is standing on its side. There are a few lifeless bodies displace...
Plant cells have a cell wall in addition to their cell membranes while animal cells only have a surrounding membrane. This allows plants to have more rigid shape so they can grow without collaps...
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