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Dialysis is used to treat patients with kidney failure - it can also be referred to as renal replacement therapy (RRT). This means that the treatment acts to replace the function of normal kidneys - to fi...
Respiration is the process by which organisms make the energy they need to function. We will discuss respiration in humans. Both humans and some species of plant are known as facultative aerobes - meaning...
Muscle contraction essentially depends on the interaction between actin light chains and myosin heavy chains in muscle fibres. We will first consider light chains; these are made up of actin filaments, ar...
First, rationalise the denominator by multiplying the top and bottom of the fraction by the conjugate of the denominator.(2/(3-sqrt(2)))((3+sqrt(2))/(3+sqrt(2)))Next, expand the brackets - notice ther...
Separate the square: (x-5)2 = (x-5)(x-5)multiply the variables: x2multiply the numbers: -5 x -5 = 25multiply a variable and a number: -5xtimes this value by two: -10xsum all answers:...
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