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Describe the sequence of events that create an action potential

Before an action potential can even start, it is important to remember that there are already uneven concentrations of ions over the membrane. Potassium ions are at a higher concentration inside the cell, wh...
RJ
Answered by Rebecca J. • Biology tutor
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What is the difference between 'horror' and 'terror' in Gothic literature?

‘Horror’ and ‘Terror’ Distinction: Horror = physical emotion (sensationalism) Terror = psychological (subtle, sublime) Origins: Horror = Matthew Lewis ('The Monk') Terror = Anne Radcliffe ('The Mysteries of ...
ON
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solve the following equation: x^2 - 7x -15 = 3

Rearrange the equation so x^2 - 7x -18 = 0, then simplify into (x-9)(x+2)=0 -> x=9 or x=-2
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Answered by James S. • Maths tutor
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Identify two ways in which men may exploit and/or oppress women within families.

Radical feminists state that family life reflects patriarchy and would therefore argue the following two ways in which women are oppressed/exploited by men within their families. Firstly, being subjected to ...
JL
Answered by Jasmine L. • Sociology tutor
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State the trigonometric identities for sin2x, cos2x and tan2x

sin2x = 2sinxcosx cos2x = cos^2(x) - sin^2(x) tan2x = (2tanx)/(1-tan^2(x))
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Answered by James S. • Maths tutor
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