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What is active transport and how is it different from diffusion?

Active transport is the movement of ions or molecules across a cell membrane against a concentration gradient. It requires energy in the form of ATP.Active transport is different to diffusion as diffusion is...
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Answered by Stella W. • Biology tutor
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What is an enzyme and explain its mechanism of action

An enzyme is a protein that is used as a catalyst in a reaction within an organism. This is used in such a way that it lowers the energy requirement for a specific reaction to occur and this could either be ...
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Answered by Michael B. • Biology tutor
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Simplify fully (3x^2-8x-3)/(2x^2-6x)

3x^2-8x-3 factorises into (3x+1)(x-3)2x^2-6x fatorises into 2x(x-3)Common factor between the numerator and denominator is (x-3)therefore the final answer is (3x+1)/2x
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Answered by Michael B. • Maths tutor
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How do you solve the equation '2x + 1 = 5'?

The objective for this question is to work out what number ' x' represents in order for this equation to be true. This simply means that we want to find the number that 'x ' equals, so we have x = ? We must ...
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Answered by Anna G. • Maths tutor
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√5(√8 + √18) can be written in the form a√10 where a is an integer. Find the value of a.

We have: √5(√8 + √18) Now, multiply out the brackets (multiply everything inside the brackets by √5). This gives us √40 + √90 We now need to simplify the SURDs. We know that we want the answer in the form a√...
Answered by • Maths tutor
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