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What is the difference between breathing and respiration?

This was a question I was commonly asked when assisting GCSE science students in year 9/10.

Breathing is simply taking air in through your nose/ mouth and down into lungs (and then breat...

Answered by Jonathan E. • BMAT (BioMedical Admissions) tutor

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There are n sweets in a bag. 6 of the sweets are orange. The rest of the sweets are yellow. Hannah takes a sweet from the bag and eats it. Hannah then takes at another sweet. The probability that Hannah eats two orange sweets is 1/3. Show that n²-n-90=0

P(2 orange sweets) = P(orange sweet) * P(orange sweet)

(6/n) * (5/(n-1)) = 1/3

30/(n(n-1)) = 1/3

90 = n(n-1)

90 = n²-n

n...

Answered by Tim V. • Maths tutor

16489 Views

Evaluate policies which a UK government could use to control the activities of oligopolists. (25 marks)

An oligopolistic market is one where mutliple firms coexist in order to provide similar goods or services. The firm’s in this market are however, price makers despite similarities in the products. This...

Answered by Tim V. • Economics tutor

34018 Views

What is alternative splicing

Splicing is a process where premRNA is transformed into mRNA.

It involves the removal of Introns ( gene sequences which do not code for proteins ) and the attachment of exons (sequences w...

Answered by Petros A. • Biology tutor

9015 Views

What is the quadratic formula and how do I use it?

The quadratic formula is a way of solving quadratic equations of the form: ax²+bx+c=0. By plugging in the values a,b and c into it, the solutions for x can be obtained:x = [-b +/- sqrt(b^2<...

Answered by Patrick M. • Maths tutor

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