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DNA helicase is important in DNA replication - explain why.

DNA helicase acts to unwind the 2 strands of DNA by breaking the Hydrogen bonds between them. This means that free nucleotide bases can be attracted and bind to the exposed bases.
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Answered by Rachel M. • Biology tutor
11752 Views

To what extent did Tony Blair succeed in remaking the Labour Party?

First and foremost, answer the question in the introduction. There is a specific focus on 'extent', 'Tony Blair', 'succeed' and 'remaking'. Question how success and remaking was interpreted in those years i....
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Answered by Chelsea K. • History tutor
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Explain why ionic compounds such as potassium sulfide have high boiling points and conduct electricity when dissolved in water?

Such compounds have high boiling points because bonds between the atoms are strong. The boiling point largely depends on electronegativity difference between the atoms - as this difference is greater, so is ...
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Answered by IVOR M. • Chemistry tutor
13915 Views

Explain how the differences in structure between Diamond and Graphite give rise to their different properties

Carbon has 4 electrons in its outer shell, so to fill its outer shell (which can hold up to 8 electrons) and be stable, it wants another 4 electrons. It can do this by sharing its 4 electrons in 4 strong cov...
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Answered by Goutham S. • Chemistry tutor
9134 Views

What is the best way to prepare history revision notes?

First, it is key to remember that revision and exam preparation does not have to be reserved for the last few months before the exam. Revision notes work best when they are continuously consolidated througho...
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Answered by Chelsea K. • History tutor
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