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Work chronologically, as you go through each step ask yourself, what, why , where , how questions?What is involved? - Pyruvic acid is converted to Acetly co-enzyme AWhy does it react?/ What conditions are...

Plant roots are underground and therefore not exposed to sunlight, sunlight is needed for photosynthesisPlant roots do not have chloroplasts/chlorophyll, chloroplasts are need for photosynthesis

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...