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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.

When factorising a quadratic expression the aim is to put the expression into brackets. Step 1: Label each expression as a b c2x2 = a 5x = b -3 = cStep 2: Multiply a with c number 2 * -3 = -6 Step 3: Know...