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Enzymes are secreted by the microorganisms and extracellular digestion takes place as the enzymes break down any complimentary substrate. Next, the products of this digestion are absorbed into the microor...

A lattice of positive sodium ions with a sea of delocalised electrons distributed around them. The metallic bond consists of the electrostatic force of attracion between the positively charged sodium atom...

Speed is the rate of change in direction, whereas velocity is the rate of change in displacement. This means that an object's velocity has an associated direction whereas its speed doesn't.If a car travel...

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So let's use 2x + 5y = 11 and 3x - 5y = 4 as our example.In these equations we have 2 unknown variables, x and y which we are trying to work out. The numbers in-front of the letters are the amount of time...