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The process of gel electrophoresis uses the fact that DNA fragments are negatively charged (due to the bulky, negative phosphate groups within the sugar-phosphate backbone) in order to pull the fragments ...

When approaching a 25 mark question such as this the most important advice to remember is: argue from evidence. Every point you make must be backed up by the latin text, preferably with a...

Well for this question we can use the SUVAT equations. We'll see what values we have and what we're looking for.

So firstly we have the initial speed, often denoted usign the letter u. I'...

The key thing to remember with the ELAT is quality over quantity. They are not looking for you to fulfill any Assessment Objectives or for you to provide a typical response so really challenge yourself...

With source work, it is very important to read both the question and the source very carefully, and to make sure you answer the question!The first step to an answer should be to read the source with the q...