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Why is it that an action potential only travels in one direction?

(draw/picture of nerve cell with its ion channels and after learning about the action potential trace and how it's derived) After each action potential, see on the trace there's a refractory period where the...
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Answered by Jasmine L. Biology tutor
16023 Views

How do you find the maximum/minimum value of an equation?

When finding the maximum or minimum of an equation, make sure you rearrange an equation to make y the subject of the equation i.e. y=_________. You can then differentiate with respect to x and then set the d...
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Answered by Jawad C. Maths tutor
7615 Views

How do I work out what the ionic charge is for different elements in the periodic table?

The useful thing is that different elements have been grouped together on the periodic table so that it's easy to see which ones share something in common. Group 1 elements become 1+, Group 2 becomes 2+, Gro...
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Answered by Jasmine L. Chemistry tutor
5880 Views

Why is the probability of inheriting Cystic Fibrosis 25% if both parents are only carriers? How did you get that figure?

(This would be after I have introduced the punnett square - I will draw this out for the student) Remember that each parent contributes one allele for a given gene to their offspring. For cystic fibrosis we ...
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Answered by Jasmine L. Biology tutor
8788 Views

How can I support my answers in English Literature with evidence from the text?

In English Literature, to support a point you want to make about a novel or a poem, you need to provide evidence from the text that supports the claims or suggestions you are making about the text. You then ...
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