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The passage is split into assessable elements. The candidates are awarded points if the meaning of the translation is conveyed correctly and the grammar is accurate (case endings, agreements and verb endi...

(2-9x)^4 [2(1-4.5x)]^4 (2^4)(1-4.5x)^4 Using the binomial expansion formula 16[1+(4*(-4.5x))+(((4*(4-1))/(12)))(-4.5x)^2] 16[1-18x+121.5x^2] 16-288x+1944x^2

The pupil constricts (becomes smaller) to decrease the light entering the eye. This prevents damage to the eye.

So this part is the last stage of respiration and you will probably ask yourself whats the point of all the NADH and FADH produced during the previous reactions ie Glycolysis producing (per glucose molecu...

To find the gradient of a function, that has constant gradient you pick any two points. You label both the x and y co-ordinates of these two points.Then you subtract the y co-ordinates of these two points...