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The key for a good 30 marker is sticking to the same tried and tested method. Start off by defining any key terms in your introduction and potentially referencing data you may have been given. Then in the...

Enzymes and substrates share specificity in that an enzyme will only react with a specific substrate • This is because the active site is complementary in both shape and charge to a given substrate • The ...

A floating exchange rate is when the price of money is determined only by demand and supply, no government intervention occurs. The factors, which influence the level of a country’s exchange rate are the ...

Considering the smallest possible value of N will mean finding the smallest possible values of a and b to give the minimum N. As a must be a square number, let's consider the square numbers: 1 squared is ...

DNA normally exists in the cell as a double-stranded structure, comprising of two complementary strands that are held together by hydrogen bonds.

DNA replication involves two main steps. Firstly, t...