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A Level

An enzyme catalyses only one reaction. Explain why.

Enzyme has a specific active site. Only one substrate will fit the active site.

AM
Answered by Amy M. • Biology tutor
7849 Views

What is the trend in ionization energy across period 3 in the periodic table?

Ionization energy generally increases across period 3 because the nuclear charge increases but the shielding of the outer electrons remains relatively the same. This means that the electrostatic force of ...

TA
Answered by Tamara A. • Chemistry tutor
132019 Views

Why does exp(x+y) NOT equal exp(x)+exp(y)? [A-level Maths and Further Maths common mistake]

This is a very common mistake, so don't worry. To see why this is the case, let's go back through our notes to the "laws of indices" and recall the rule for adding powers; am

TD
Answered by Tutor56252 D. • Maths tutor
9478 Views

Describe how insulin is secreted from beta cells in the Islets of Langerhans

Insulin is released in response to high blood glucose concentrations. High blood glucose concentrations means glucose is taken up by the beta-cells in the Islet's of Langerhans and is respired to produce ...

TD
8056 Views

When/why should I use chord inversions in a Bach chorale?

Inversion chords serve mutiple functions in the harmonic workings of a Bach chorale. First and foremost, they allow you to keep the bassline conjunct and smooth, whilst also making the harmonic progressio...

JK
Answered by Jack K. • Music tutor
10320 Views

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