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DNA polymerase is an enzyme that catalyses the synthesis of DNA molecules from free nucleotides. After DNA helicase unwinds the DNA molecule, DNA polymerase reads the existing DNA strands and incorporates...

Firstly, we have to understand what a buffer is. A buffer is a solution which resists changes in pH when small amounts of acid or base are added. The key word here is small amounts, as if too much acid or...

This question is asking for an outline of how antibody is produced in an immune response, and for the 4 marks, we need to identify 4 or more steps using key words in this process. This question could also...

Macbeth is a play about a characters demise. He starts as an ambitious, hungry, and shrewd character with a thirst for power. As he transforms into the King he yearns to be, he is then consumed by the for...

The cyrosphere is one of the main stores of water, this also includes permafrost. Any crysopheric change can influence sea levels. For example, during a glacial period where there is significant cooling, ...