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What is homeostasis?

Homeostasis is the maintenance of a constant internal environment (in response to internal or external changes in the environment)Homeostasis can be maintained by negative feedback mechanisms which detect ch...
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Answered by Simisola O. • Biology tutor
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Describe the steps in a reflex arc.

This question was made using AQA specifications. The reflex arc is a series of events connecting a stimulus to a response. The stimulus, for example a hand touching a hot pan, stimulates the receptor, which ...
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Answered by Frances A. • Biology tutor
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What is the function of bile?

Bile is a substance synthesised in the liver and released by the gall bladder. It is released into the small intestine and helps breakdown large fat droplets into smaller ones, via emulsification. This incre...
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Answered by Shyam P. • Biology tutor
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Differentiate (3x^2-5x)/(4x^3+2x^2)

We can differentiate the expression using the quotient rule. If f(x)=u(x)/v(x) then f'(x)=(u'(x) v(x)-u(x) v'(x))/v(x)^2. In this case u(x)=3x^2-5x so u'(x)=6x-5 and v(x)=4x^3+2x^2 so v'(x)= 12x^2+4x. Using ...
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Answered by Andras Ivan A. • Maths tutor
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How to best prepare for an unseen poem question on a GCSE English Literature paper?

Firstly, it is important to remember that with this and every English Literature question there is no one right or wrong answer! The study of English is about expressing your own personal thoughts and ideas ...
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