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Describe and explain the role of positive feedback in an action potential

Describe:· Random or small amount of sodium ions enter the axon (diffusion) which leads to a slight depolarisation of the membrane· Down the concentration gradient (more sodium outside the cell than inside)·...
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Answered by Ayesha H. • Biology tutor
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What are the main tenets of the Republican Party?

The Republican party in the US is the right-wing end of American politics. Although politics in the US is greatly bipartisan, it is also difficult to separate the many different facets on either side. The Re...
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Answered by Amelia F. • Politics tutor
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What are the issues with globalisation?

Globalisation is the process by which there is an increase of power for international institutions, and far more interaction between different states on an international governing level. The collaborative an...
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Answered by Amelia F. • Politics tutor
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What are the differences between classical and operant conditioning? Give examples of studies.

Conditioning refers to behaviour which is leaned. Two main types of conditioning have been identified in Psychology, these are classical and operant conditioning. Classical conditioning refers to behaviour e...
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Answered by Isobel D. • Psychology tutor
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Explain what led to the plum pudding model of the atom being replaced by the nuclear model of the atom.

An early model which was based on a scientific idea on atomic structure was the plum pudding model. In this model, it was believed the atom was a sphere of positive charge with negatively charged electrons s...
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Answered by Zoe H. • Physics tutor
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