Top answers

What is the difference between DNA and mRNA?

DNA and mRNA are both nucleic acids and are made up of a sugar, phosphates and a base. However, they are very different. Firstly by simply looking at the molecules DNA is double stranded whereas mRNA is sing...
EC
Answered by Emma C. • Biology tutor
6048 Views

What is the integral of x^2 + 3x + 7?

X 2 -> 2X 3X -> 3 7 -> 0 Therefore X 2 + 3X + 7 integrates to 2X + 3
RD
Answered by Rhys D. • Maths tutor
4435 Views

Turning points of the curve y = (9x^2 +1)/3x+2

Use quotient rule to differentiate: dy/dx = (18x(3x+2) - 3(9x 2 +1))/(3x+2) 2 set dy/dx=0: 54x 2 + 36x - 27x 2 - 3 = 0 9x 2 + 12x - 1 = 0 solve quadratic to obtain values of x, and then find corresponding va...
JH
Answered by Jacob H. • Maths tutor
4154 Views

What's the best way to approach source-based questions?

Source-based questions can be tricky. More than any other question format, examiners choose source-based questions to prevent candidates from simply regurgitating a pre-formed essay. In other words - they fo...
LS
Answered by Leo S. • History tutor
3879 Views

What is the most effective way to answer an essay question in the exam?

Note: During the session I would have a practice question I would use to highlight these points more effectively and to help the student understand better. First of all it is necessary to read and understand...
LS
5605 Views