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Describe the theory of enzyme action.

Enzymes are biological catalysts that speed up the rate of biological reactions. The enzyme active site and the substrate are complimentary in shape. This allows the substrate to bind to the active site of t...
CD
Answered by Catherine D. • Biology tutor
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Explain why there is a general increase in the first ionisation energy across the third period.

The first ionisation energy depends on:the charge on the nucleus, the distance of the outer electron from the nucleus, the amount of shielding by inner electrons and whether the electron is alone in an orbit...
MP
Answered by Mara P. • Chemistry tutor
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Solve 7(x-5)=25-3x

Firstly, expand the left hand side of the equation out to produce: [7x-35=25-3x]. Bring all the x's to one side (to form 10x=60). Divide both sides by 10 to find the solution for x [x=60/10]. Therefore, x=6
JJ
Answered by Jenni J. • Maths tutor
4880 Views

The equation 5x sqaured + px + q , where p and q are constants, has roots α and α + 4. (a) Show that p squared = 20q +400.

a+a+4 = -p/5a+2 = -p/10(a+2)sqaured = q/5 +4p sqaured/100 = q/5 +4p sqaured = 100(q/5 +4)implies p squared = 20q+400
AT
Answered by Ahmed T. • Maths tutor
6528 Views

Write an introduction to a Philosophy and Ethics question

A good introduction provides clarity to the question and informs the reader to what is going to be argued.1.) An effective introduction immediately offers a clear judgement, this gives clarity to the main th...
JT
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