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A Level

How does the sequence of pressure changes in the heart produce a unidirectional flow of blood?

The heart follows a cycle of contraction (systole) and relaxation (diastole), like this:

whole heart diastole --> atria systole --> ventricular systole --> atria diastole, ventricular syst...

MW
Answered by Maria W. Biology tutor
4544 Views

What is the gradient of the quadratic function y=3x²?

The gradient of a function with variable x is found by applying the differential operator to it. The differential operator is commonly written as d/dx. Hence the differential operator applied to the funct...

MC
Answered by Matthew C. Maths tutor
10191 Views

Was the Pilgrimage of Grace 1536 a failure or a success?

In some aspects, the Pilgrimage of Grace was a success. This is due to the fact that it did attract the attention of the King, as it intended to. It can also be inferred that it initially posed a threat t...

OC
Answered by Olivia C. History tutor
14875 Views

How would I go about analysing a poem?

When analysing a poem it is best to be as clear and concise as possible. At A-Level, while there is some room for personal interpretation, you will not really be expected to give your opinion on the piece...

SM
3985 Views

Evaluate the idiographic v nomothetic approach in psychology

A strength of taking a nomothetic view is that it may provide a more scientific explanation than the idiographic approach. The processes involved in nomothetic research tend to be more scientific (e.g. te...

KB
Answered by Kate B. Psychology tutor
14477 Views

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