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How are polynucleotide DNA strands held together? (3 marks)

The two antiparallel strands of DNA are held together by hydrogen bonds joining the bases of each complementary nucleotide; Adenine is held to Thymine by 2 hydrogen bonds, and Guanine to Cytosine by 3 hyd...

Answered by Srishti A. • Biology tutor

9728 Views

How to effectively answer 'evaluation' essay questions? (example Q-"Evaluate Portman's use of instrumentation, melody and harmony in the music for 'The Duchess', in relation to the film's historical subject matter.) )

Before writing the essay It is essential to roughly plan your essay, which will provide effective framework to your ideas and analysis. Write down three other relevant musical work...

Answered by Henrietta M. • Music tutor

9583 Views

What's the best way to improve my English grade?

Close reading! The easiest and most straight forward way to improve your English grade is to get to grips with analysis. With both GCSE and A Level, the fastest way to climb the marking criteria is showin...

Answered by Emilia K. • English Literature tutor

4434 Views

Why does an action potential travel faster in a myelinated neurone compared to a non-myelinated neurone?

Myelinated and non-myelinated neurones have different structures which is why the speed of action potentials differ. In a Myelinated neurone, a myelin sheath is wrapped around the axon. This myelin sheath...

Answered by Saima F. • Biology tutor

15561 Views