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What is the job of the cell membrane?

Controls the movement of substances into and out of the cell.
Answered by • Biology tutor
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Briefly outline and evaluate authoritarian personality as an explanation of obedience to authority.

A personality type consisting of traits whereby individuals are obedient to those of a higher status. These individuals have conventional views and have strict adherence to social values. This personality is...
Answered by • Psychology tutor
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How can genetic engineering be used in forensic science and paternity tests?

Genetic fingerprinting is a technique that utilises the presence of highly repetitive non-coding DNA sequences in the human genome, known as variable number tandem repeats (VNTRs). These vary considerably be...
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Answered by Samuel W. • Biology tutor
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What are the three different physical states and how do they differ?

There are three different physical state configurations of a substance, solid, liquid and gas. The different states are caused by the arrangement and movement of the particles that make up that substance. Th...
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Answered by Samuel W. • Chemistry tutor
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Find (dy/dx) of x^3 - x + y^3 = 6 + 2y^2 in terms of x and y

In order to differentiate this expression, we need to use implicit differentiation. An expression in the form y = f(x), where f(x) means "a function of x", is called an explicit equation and needs ...
Answered by • Maths tutor
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