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How does gel electrophoresis work to separate DNA fragments of different lengths and how may the lengths of the different strands then be determined?

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 ...

Answered by James P. • Biology tutor

14306 Views

In what ways does Virgil present Dido as an increasingly desperate individual in these lines? How does he communicate to the reader that the outcome will be disastrous for her?

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...

Answered by Ben G. • Latin tutor

4476 Views

If two cars are moving, labelled car A and car B. Car A moves at 15 m/s and B at 10 m/s but car B also accelerated at 2 m/s/s. If the two both travel for ten seconds, which car will travel further?

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'...

Answered by Tom W. • Physics tutor

6479 Views

How should I choose my passages in the ELAT?

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...

Answered by George B. • ELAT tutor

2952 Views

How do I analyse a source?

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...

Answered by Sophie A. • History tutor

3170 Views