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What are the main differences between RNA and DNA molecules?

When it comes to structure single strands of DNA and RNA are highly similar. However, there are few major differences which reflect the different functions of these molecules. Namely, DNA acts as a genetic i...
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Answered by Ted R. • Biology tutor
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Outline the process of neuronal communication between two neurones

Ensure that your answer is precise, without too much waffle - this can confuse examiners and you'll lose easy marks! Take it step by step: First, the neurotransmitter , acetylcholine , is released from the p...
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Answered by Ellie W. • Biology tutor
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What is the role of adrenaline in glucoregulation?

Although a lot of the time this can seem like a daunting question as there's a lot of specific terminology to use and a variety of reactions/interactions occurring, by splitting it up into short, simple step...
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Answered by Ellie C. • Biology tutor
3307 Views

Describe how mRNA is produced in the nucleus of a cell

Helicase (an enzyme) breaks the hydrogen bonds between the DNA resulting in two strands. Only one strand acts as a template. RNA nucleotides attracted to exposed bases according to base pairing rules (A-U, G...
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Answered by Rachel N. • Biology tutor
3990 Views

List three differences in the composition of tissue fluid at the arterial end of the capillaries to the tissue fluid at the venous end of the capillaries.

The arterial end contains a higher concentration of oxygen than the venous end.The arterial end contains a higher concentration of glucose/amino acids.The arterial end contains a lower concentration of waste...
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Answered by Abdullah E. • Biology tutor
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