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Briefly describe how a vaccine works.

A vaccine is a dead or attenuated (weakened) form the pathogen. When injected into the host, the antigens on the surface of the pathogen generate an immune response. This stimulates the production of white b...
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Answered by Krishan P. • Biology tutor
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Why are metals good conductors of electricity?

Metals form metallic bonds, where unlike in covalent or ionic bonding, electrons are delocalised. This means the electrons can move freely throughout the metallic structure. Electricity is the flow of electr...
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Answered by Olivia K. • Chemistry tutor
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The equation of line A is y = 6x -4. The equation of line B is 2y - 12x + 14 = 0. Are these two lines parallel?

Line A has a gradient of 6, because it is in the form y = mx + c, where m=6. Line B can be rearranged to y= 6x - 7, so the gradient is also 6. The gradient of both lines is the same, so they are parallel.
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Answered by Matthew L. • Maths tutor
3862 Views

How should I go about writing a question on ... (e.g. The Great Gatsby)

The first stage is to decide on 3/4 major points that you will be writing about. These points can each be focusing on a character or a different theme, as long as each point is unique and adds to the overall...
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What is the difference between the immediate (near) future tense and the future tense?

The immediate (near) future and the future tense both convey actions that will happen IN THE FUTURE. However, they have a slight difference in meaning, which can make all the difference when explaining an ac...
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Answered by Nia L. • French tutor
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