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Action potentials are changes of electrical potential in a cell. The normal resting membrane potential inside cells is around -70mV. This membrane potential is maintained through the action of the Na^...

Equation 1 : y = 2x -3 Equation 2: 2x +3y = 23To solve these equations you use a method called substitution The information from the 1st equation is used by the 2nd one Sub in the formula for y like so: 2...

Electron microscopes have higher magnification and higher resolution than light microscopes. Scanning electron microscopes can be used to examine the surface of cells and structuresLight microscopes can b...

First factorise the quadratic into the form (x + a)(x + b) = 0.This will make x^2 + ax + bx + ab = 0.Work out a and b so that a + b = 7 and ab = 10.a = 5 b = 25+2 = 7 52 = 10.

The main two tips I would give for the 150 word question are as follows: Read the questions at least twice and underline any key words.As there is a choice between two questions fo...