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whats the difference between meiosis and mitosis

Meiosis and mitosis are both forms of cell division. For mitosis, the cell divides into two cells. For meiosis, the cell splits twice, forming four cells. The cells produced are called daughter cells, and fo...
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Answered by Ellen L. • Biology tutor
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My teacher keeps talking about linking back to the question - how do I do this in an essay?

Linking back to the question is one of the most important parts of an essay - At A Level, it's what will push you up into the higher grade brackets. The easiest way to do this, is to literally copy out parts...
Answered by • History tutor
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Assuming the Earth is a perfect sphere of radius R. By how much would your mass (m), as given by a scale, change if you measured it on the north pole and on the equator?

The key observation here is that the Earth is spinning (angular velocity w) and so are you. The scale will give one number or another depending on the force that you exert on it, and by Newton's 3rd Law that...
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Answered by Javier P. • Physics tutor
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Describe the differences between DNA and RNA. (3 marks)

Any 3 from:DNA is double stranded, whereas RNA is single strandedDNA consists of Deoxyribose sugar, whereas RNA is made from Ribose sugarThymine can be found in DNA, whereas it is replaced by Uracil in RNADN...
Answered by • Biology tutor
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Add the fractions 2/5 + 3/7.

We must find a common denominator between the fractions to be able to add them (the bottom numbers must be the same). A common denominator of 5 and 7 is 35. To get to 35 from 5 we multiplied by 7, therefore ...
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Answered by Alex L. • Maths tutor
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