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How is the resting membrane potential produced in typical mammalian neurons?

The membrane potential describes the movement of charged ions across a membrane. A positive membrane potential indicates net movement of positive charge into the cell, or net movement of negative charge out....
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Answered by Alex T. • Biology tutor
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i) Write a full balanced equation for (a) the complete combustion of glucose and (b) the incomplete combustion of glucose. ii) Following from part i) suggest a reason (and explain) the difference with the product in reaction (a) and that of reaction (b).

Part I (4 marks) a) C 6 H 12 O 6 + 6O 2 -> 6CO 2 + 6H 2 O b) C 6 H 12 O 6 + 3O 2 -> 6CO + 6H 2 O Part II (2 marks) Equation (a) could be carried out in an open vessel where there is an excess of oxygen...
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Answered by Lavan G. • Chemistry tutor
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How do you measure the gradient of a straight line joining two points?

There is a simple method for working out the gradient of a straight line joining any two points, for which the X and Y coordinates are known. For instance, if our first point is: A(X 1 ,Y 1 ), and our second...
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Answered by Alex T. • Maths tutor
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Student wanting to go over the term 'de-selection' in UK politics (potential 5 mark question on Unit 1 exam; Political Parties question)

Key point of 5 mark short answers: 5 mins for 5 marks (but can do in 3 1/2 mins) Generally split the answer into two: define the concept questioned ie. 'de-selection': De-selection is the process in which in...
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Why politics matter?

Politics is a driving force that moves the happenings around the world. Politics is logical and interesting in many ways, such as the theories and theorists that give you an explanation, why politicians beha...
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Answered by Anna N. • Politics tutor
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