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How does DNA replicate?

The first stage involves transcription within the nucleus, the gene of interest is unzipped from it's double helix by enzyme DNA helicase. once single stranded a piece of mRNA which is able to fit through th...
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Answered by Talvin R. • Biology tutor
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Briefly describe the terms "antigen" and "antibody", and describe the structure of the latter. Briefly describe the processes of opsonisation, phagocytosis and destruction of bacteria by macrophages.

An “antigen” is a specific foreign molecular entity which is bound by antibodies during an immune response. Examples of antigens include peptides from bacterial surface proteins, which signal the presence of...
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Answered by Andrew R. • Biology tutor
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explain process of glycolysis

firstly, glucose is converted into glucose phosphate and then into glucose biphoshate through phosphorylation. This process turns two molecules of ATP to ADP. This is then split into two molecules (3 carbons...
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Answered by Yasmin H. • Biology tutor
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How does the pacinian corpuscle produce a generator potential?

A change in pressure causes a change in conformation/shape of stretch mediated ion channelsThis causes Na+ channels to flow across the membraneThis causes depolarisation at the Membrane producing our generat...
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Answered by Okuk T. • Biology tutor
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Describe the process of mitosis

Mitosis is the a form of cell division in which two genetically identical daughter cells are formed. It occurs to grow new tissue e.g. such as skin Before the cell divides it goes through a growth phase wher...
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Answered by Omolara A. • Biology tutor
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