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How do white blood cells defend against invading pathogens?

They can engulf and ingest pathogens; this is essentially the white blood 'eats' the pathogen. They secrete (release) antitoxins which counteract the toxins released by pathogens. The toxins they release are...
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Answered by Emily M. Biology tutor
15267 Views

What is another model for enzyme activity?

Another proposed model is induced fit. This suggests that the substrate and active site are not a perfect match to each other. So inorder to fit together both the substrate and active site must change shape ...
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Answered by Emily M. Biology tutor
4587 Views

What is the Sequence of Tenses?

The sequence of tenses explains why subjunctives in subordinate clauses are in the tenses that they are in, and it provides insight into how to translate the clause. Latin has two sequences of tense- primary...
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Answered by Madison B. Latin tutor
5600 Views

∫(1 + 3√x + 5x)dx

For each term the aim is to raise the power of x by 1 and divide by the new power. For this question, each part of the expression can be looked at seperately to make things a bit easier: ∫(1 + 3√x + 5x)dx = ...
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Answered by Mary T. Maths tutor
9163 Views

How do I choose which short answer questions to answer in the exam (AQA)?

In a nutshell: choose the questions in which you feel you will get the most marks. The difficulty arises when the 40 mark essay question you want to answer is the same topic as one of the short answer questi...
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Answered by Alana F. Geography tutor
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