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The role of enzymes are to act as a catalyst to speed up the rate of chemical reactions within the human body. They do this by binding to a molecule or substrate and breaking it up or by combining two mol...

First, we can draw a diagram to visualise the triangle and the elements of the question. Looking at this, we can see that we know the length of the hypotenuse (H) and we need to calculate the length of th...

First, work out 10% of 12000 as this is a much easier calculation. To do this, one "0" can be taken off the end of the number, to give 1200. Then, to work out 20%, we know that 10x2 = 20. So, 10...

x²+7x+6=0First identify factors of 66x1=63x2=6Then look at these pair and see if either of the can be added/subtracted from each other to give the value of 7. Therefore you would use 6+1=7These...

Covalent bonds are formed as a result of the sharing of pairs of electrons between atoms in order to attain a full outer shell. This typically will happen between two non metals. An ionic bond has the sam...