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Hydrogen ions are pumped out of companion cells using ATP.This creates a high concentration of hydrogen ions outside of the companion cell. H+ ions diffuse down their concentration gradient back into the ...
Writing an essay is an art: it takes practice to perfect. But the key to writing good essays is proper preparation. Under exam time pressure, it can be tempting to skimp on planning and launch straight in...
Firstly, you should often begin with highlighting what the question is actually asking you and making sure to contain the key phrases or terms in your answer. This will also help tremendously to keep on t...
In order to achieve full marks in essay questions it is very important to structure your answers in an organised manner. I would recommend one introductory paragraph, one or more development paragraphs an...
For this question, we will use moments. A moment is defined as:Moment = force x perpendicular distance from pivotHere, the moment of the 30kg mass which acts anti-clockwise through the pi...
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