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What gives an enzyme specificity?

Enzymes are typically globular proteins that catalyse a specific reaction. Being proteins, enzymes have a well-defined overall conformation (shape), or 'tertiary structure', which allows formation of a catal...
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Answered by Tom H. • Biology tutor
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What purpose should an introduction serve?

It is necessary to give an overview of your argument. It should be possible to copy and paste this introduction into the position of the conclusion. The aim of the essay is not to take the examiner on a roll...
CE
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How can we express probability?

Probability is how likely something is to happen, and we sometimes here it called chance. So, the probability of something happening means how likely it is to happen. It can be expressed in two main ways: 1)...
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Answered by Luke B. • Maths tutor
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Expand (x+3)(2x+9)

(In terms of formatting, we'll use little x "x" to mean the algebraic variable, and big x "X" to mean multiply). When we see two sets of brackets written next to each other, such as (...)...
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Answered by Luke B. • Maths tutor
9445 Views

b) The tangent to C at P meets the coordinate axes at the points Q and R. Show that the area of the triangle OQR, where O is the origin, is 9/(3-e)

If I were to get the job, I would get a writing board to help explain this. But to approach this question, it's a good idea to draw the graph. You know that the tangent line is a straight line and as the x a...
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Answered by Sophie H. • Maths tutor
5626 Views