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To what extent was the calling of the First Crusade a response to Alexios's plea for help?

The calling of the first crusade by Pope Urban II in 1095 at Clermont can be seen as a response to the many pleas sent by the Byzantine Emperor, Alexios Comnenus. This was after vast swathes of land had been...
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Answered by Jack M. • History tutor
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How does the protein structure of fibrous and globular proteins differ, and how does this affect their function?

When we answer this question we need to focus on the differences in interactions that create the tertiary and quaternary structure of fibrous and globular proteins. For example, fibrous proteins are characte...
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Answered by Jack B. • Biology tutor
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How is a resting membrane potential of a neuron maintained?

It is maintained primarily through the maintenance of a sodium and potassium gradient across the cell membrane. The concentration of sodium is high outside the cell, extra-cellularly, and the potassium conce...
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Answered by Jed A. • Biology tutor
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If y=2x+4x^3+3x^4 and z=(1+x)^2, find dy/dx and dz/dx.

Differentiation dy/dx = 2+12x^2+12x^3 Chain ruleu = 1+xz=u^2dz/dx = dz/du * du/dx = 2u * 1 = 2(1+x)
Answered by • Maths tutor
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give an example of a monomer

Glucose is a six-carbon monosaccharide that is broken down during aerobic respiration to produce ATP and CO2. It exists as two isomers- alpha and beta.
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Answered by Bethany N. • Biology tutor
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