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MEdical school interview question- Describe this image to me

Remember to stay calm, don't worry about the time constraints. Take a second to think about what you are going to say. The aim of this station is to examine your communication skills.Start with the obvious e...
ED
3171 Views

Let n be an integer greater than 1. Prove that n^2 - 2 - (n-2)^2 is an even number.

To show a number N is even, we must be able to express it in the form N = 2x for some other whole number x. Let's try to manipulate the given expression to see if we can put it in this form. By expanding the...
SL
Answered by Sam L. • Maths tutor
18475 Views

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...
KP
Answered by Krishan P. • Biology tutor
4145 Views

How do I approach primary source evaluation at A-level?

Analysis of primary sources can often seem daunting, especially with Early Modern topics where the language can be difficult to understand. Breaking the analysis down into sections can make it easier – we wi...
HB
Answered by Hannah B. • History tutor
5734 Views

Explain what is meant by epigenetics and how it can inhibit transcription.

Epigenetics is the process by which heritable changes in gene function are caused by environmental factors. These changes are not within the base sequence of our DNA but are in fact due to the chemical tags ...
ET
Answered by Emily T. • Biology tutor
6544 Views