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How does DNA undergo replication?

Firstly, the enzyme DNA Helicase breaks the hydrogen bonds present between base pairs. This allows the DNA double helix to unravel, exposing the DNA bases. Free DNA nucleotides then bond to the exposed base ...
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Answered by Victoria O. • Biology tutor
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How does adrenaline, using the second messenger model, cause glycogenolysis?

First of all, it is best to understand what glycogenolysis actually is. It is the breakdown of glycogen to form glucose and can be used by the liver to combat low blood glucose levels. Firstly, adrenaline bi...
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explain how a diet high in salt can increase risk of developing cardiovascular disease (5 marks)

Diet high in salt increases risk of cardiovascular disease high salt diet raises BPwhich increases risk of atherosclerosis increasing the risk of inflammatory responseincreasing the risk of plaque formationN...
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Answered by Georgia E. • Biology tutor
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Describe the process of translation (4-6 mark)

mRNA moves out of nucleus and attaches to ribosomet. RNA carrying amino-acids bind by their anticodons to the mRNA - by co mplementary base pairing. Another molecule of tRNA with another amino-acid attaches ...
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Explain the steps leading up to muscle contraction

At the axon terminal of a motor neurone, an action potential arrives and triggers an influx of calcium ions. These calcium ions cause vesicles containing Acetylcholine (a neurotransmitter that works on choli...
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Answered by Arianna R. • Biology tutor
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