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Describe the function of the enzymes DNA helicase and DNA polymerase.

DNA helicase unwinds DNA by breaking H bonds between DNA strands. DNA polymerase joins adjacent nucleotides by forming phosphodiester bonds between them.
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Answered by Susannah C. • Biology tutor
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What are the stages of aerobic respiration?

There are four stages of aerobic respiration- glycolysis, which takes place in the cell cytoplasm and the link reaction, Krebs cycle, and oxidative phosphorylation, which all occur in the mitochondria.Glycol...
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Answered by Jessie M. • Biology tutor
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How does the adrenaline hormone cause the conversion of glycogen to glucose?

This can best be described as the second messenger model. Adrenaline is a hydrophillic hormone so it only acts on receptors on the cell surface membranes. The hormone fuses to the receptor site which then ac...
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Answered by Kimberley P. • Biology tutor
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Mitosis is important in the life of an organism. Give two reasons why

Growth / increase in cell number2. Replace cells / repair tissue / organs /body
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Answered by Lucy D. • Biology tutor
10668 Views

How is an action potential generated?

A nerve cell when at rest is negatively charged, this means that on the inside it is more negative than on the outside. The potential difference is around -70mV. The mechanism that helps to achieve that pola...
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Answered by Veronika L. • Biology tutor
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