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What are three differences between DNA and RNA? ( 3 marks)

RNA is single stranded whereas DNA is double stranded - RNA has the bases A,G,C and U whereas DNA has the bases A,G,C and T - An RNA nucleotide has ribose as its sugar component whereas a DNA nucleo...

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It has been suggested that smoking, an epigenetic factor can lead to tumour growth and cancer. Use your knowledge of the epigenome and its structure to explain how this could occur. [5 marks]

Marking Scheme: MP1: Define epigenome- layers of chemical tags covering the DNA and histone protein complex MP2: Increased Methylation of DNA molecule MP...

Answered by Hannah H. • Biology tutor

2413 Views

How do I conjugate the past tense?

Regular verbs in Spanish follow a series of rules which are easy to follow and remember. Forming the past tense follows these rules - easy peasy!
You take the stem of the verb and add on certain end...

Answered by Anna B. • Spanish tutor

1931 Views

How and why does Shelia change in An Inspector Calls

J.B Priestley's An Inspector Calls, is a political statements towards the bourgeoise and how they are unacountable for their actions in society. Shelia Birling is the youngest child of Mr Birling. Shelia ...

Answered by Chloe M. • English tutor

39139 Views

The Haber-Bosch process is used in industry to produce ammonia. Explain how the use of high temperature and pressure affects the rate of reaction.

According to collision theory: Increasing the temperature increases the average energy of the system. This means more molecules have enough energy to overcome the activation enthalpy when they collide, ca...

Answered by Adam W. • Chemistry tutor

3867 Views