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Describe the stages in viral replication

The first stage in viral replication occurs when a virus attaches to the surface of a host cell. The viral nucleic acid (VNA) then enters the cell. The VNA then takes over the cell, altering the metabolism o...
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Answered by Tara F. • Biology tutor
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I often understand the question and think I have answered it correctly, but I don't get all the marks for my answer. What am I doing wrong?

One of the things that you need to remember about Biology A Level is that you have to memorise the key points of the mark scheme. Something that I consistently struggled with when I was doing past papers is ...
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Answered by Shannon M. • Biology tutor
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What are the differences between an introduction and conclusion in a history essay?

An introduction and conclusion are similar and important parts of any history essay. It is crucial though that you do not repeat yourself. An introduction directly addresses the essay question and clearly st...
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Answered by Therese R. • History tutor
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expand and simplify (x+7)(2x+4)

Using the F.O.I.L rule, standing for first, outside, inside, last, we would multiply out the relevant terms. to give: 2x^2+4x+14x+28. Once we have successfully multiplied out the brackets, we would identify ...
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Answered by Ed D. • Maths tutor
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What should I do if and when I am stuck on the comprehension section?

Firstly, it is important not to get too worried as the answers will always be in the text. By jotting down a few notes for every three to four sentences whilst you read the text, you can easily look back and...
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Answered by Therese R. • French tutor
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