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Give three differences between the structures of RNA and DNA

DNA has a double helix structure, RNA is usually single-stranded DNA is stable, RNA is very unstable DNA is longer, RNA is generally shorter DNA contains Thymine, RNA contains Uracil DNA contains a deoxyribo...
SM
Answered by Shannon M. • Biology tutor
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‘The Second World War was the most important turning point in the development of African American Civil Rights.’ How far do you agree with this view of the period from 1865 to 1992?

I would explain that when structuring the essay you have to work through it in a thematic order and therefore could structure the essay socially, economically and politically when assessing the central facto...
YH
Answered by Yasmin H. • History tutor
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What is a type 1 error? Explain why psychologists use the significance level of 0.05 in research (3 marks)

A type 1 error arises when after an experiment, the null hypothesis is rejected even when it is true and the alternative hypothesis is accepted. This can be referred to as a false positive as a significant c...
SW
Answered by Sophie W. • Psychology tutor
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Expand and simplify (x+5)(x+7)

Front - Outer -Inner -Last (FOIL) x X x = x^2x X 7 = 7x 5 X x = 5x5 X 7 = 35 7x + 5x = 12x x^2 + 12x + 35
EM
Answered by Ellie M. • Maths tutor
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Describe the acute effects of high altitude on the cardiovascular and respiratory systems

Decreased partial pressure of O2 in the air means that the diffusion gradient between the alveoli and surrounding capillaries is reduced. Hence there’s a decreased haemoglobin and oxygen association in the b...
EM
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