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What are the functions of the cell membrane?

The cell membrane separates the intracellular and extracellular environments. The lipid bilayer only allows small polar molecules (such as O2 or CO2), small hydrophobic molecules (fatty acids, steroid hormon...
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Answered by Francesca D. • Biology tutor
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How do I start my personal statement?

A catchy first line summarising your interest in your chosen course and what you feel you'll bring to it will grab the interest of the admissions team. Quotes can be a bit cheesy unless they are genuinely th...
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How do I get relevant clinical experience for a medical school application?

You can get relevant clinical experience for Medicine in many areas, including hospitals (check your local teaching hospitals for shadowing schemes or volunteering), general practice (write to practices to a...
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How do I figure out UKCAT abstract reasoning patterns?

Think of the categories of factors that could be used in the pattern sets and you'll be able to rapidly go through them in your head to narrow it down: colour, shape, symmetry, number, size, rotation, etc. O...
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Answered by Sophie E. • UCAT tutor
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A rollercoaster stops at a point with GPE of 10kJ and then travels down a frictionless slope reaching a speed of 10 m/s at ground level. After this, what length of horizontal track (friction coefficient = 0.5) is needed to bring the rollercoaster to rest?

Recognise that the intial potential energy and kinetic energy at 10 m/s position should be identical due to the frictionless slope. mgh = 0.5mv 2 10kJ = 0.5 x m x 10 2 10 000 = 0.5 x m x 100 50m = 10 000 m =...
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Answered by Daniel M. • Maths tutor
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