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A Level

Explain the process of transcription

part of the DNA molecule unwinds DNA strands separate by DNA helicase breaking the hydrogen bonds one strand used as the template strand free nucleotides line up against DNA and bind through complementary...

MC
Answered by Molly C. Biology tutor
2487 Views

Describe and explain how the secretion of ADH affects urine production in the kidneys (4 marks)

ADH diffuses into the blood stream and binds to receptors present on the lining of the collecting duct/ DCT (1)This increases the permeability of the membrane of the collecting duct/ DCT (1)Therefore, mor...

Answered by Biology tutor
4945 Views

What are the most important differences between the American President and the British Prime Minister?

There are a few important differences we need to understand between the President and the Prime Minister. These are probably the two most important and if you remember them you will be doing well.
F...

JG
22402 Views

How can I calculate the standard deviation of a data set?

The formula for the variance of a data set can be easily remembered by this catchy phrase: 'The mean of the squares minus the square of the mean'. The standard deviation is equal to the square root of the...

RM
Answered by Robin M. Maths tutor
3801 Views

Prove by mathematical induction that 11^n-6 is divisible by 5 for all natural numbers n

First I would do the base case (the first value):Test n=1,111-6=5. 5 is divisible by 5 therefore true for n=1.
Now we assume true for n=k,11k-6 is divisible by 5.Next we test n=...

3250 Views

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