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(draws two right angled triangles, one with sides 3 and 4 units with the hypotenuse labelled 'x', one with a side labelled 4 units and 'Y' with the hypothenuse labelled 5 units).
The answer is in two...

Na+ ions are actively transported out of the epithelial cell into the blood by an Na+ pump. This requires ATP. This establishes a concentration gradient of Na+, with a high Na+ concentration in the ileum ...

I would say the most important thing is to make sure you're confident talking about anything you've mentioned in your personal statement. For humanities-based subjects at least it is important to have don...

Last year, I travelled to Madrid to interview a famous actor. I enjoy working as a journalist because the job is so exciting. However, my dream is to become a teacher although it i...

26 protons, 30 neutrons and 26 electrons.