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A Level

Where did mitochondria come from?

Mitochondria are a fascinating organelle, which we, as humans, rely on for so much. They are where the electron transport chain occurs, where ADP is conv...

PQ
Answered by Patrick Q. Biology tutor
5247 Views

How do I find the root of a quadratic equation?

Usually the easiest way to find the root of a quadratic is to factorise it so you have something a form similar to - (x+2)(x-1)=0.

From here you need to find a value for x that makes each brac...

NF
Answered by Nicky F. Maths tutor
5864 Views

What is the name of the first stage of respiration?

Glycolysis. This is an anaeorbic process whereby glucose is converted to pyruvate via triose phosphate. This process gives out a total of 4 ATP molecules but requires 2 ATP molecules to convert glucos...

AS
Answered by Adam S. Biology tutor
3509 Views

How do I integrate log(x) or ln(x)?

The integral of log(x) is not necessarily straight-forward. Though we can use the fact that d/dx(log(x)) = 1/x to help us.

Rather than simply trying to integrate log(x), we can use integration...

DF
Answered by Daniel F. Maths tutor
16390 Views

How do I integrate cos^2(x)?

The key to solving any integral of this form is to use the cosine rule:

cos(2x) = cos2(x) - sin2(x) = 2cos2

DF
Answered by Daniel F. Maths tutor
40371 Views

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