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What can I do to impress Oxbridge interviewers and what are they looking for?

Oxbridge interviewers want to see how you think. One tip is to think out loud, explain your thought process- if you don't get the answer right, it might not matter. It's about how you got to it. They also wa...
EF
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Describe how the rhythmicity of the heart is established and maintained with respect to the different stages in the cardiac cycle (6 marks)

The Sinoatrial Node (SAN) generates the wave of excitation/ Action potential (AP). The AP spreads across the atrial walls, stimulating the myocardial cells to contract This initiates the atrial systole. The ...
HM
Answered by Haider M. • Biology tutor
6842 Views

At x=3, is the polynomial y= (4/3)x^3 -6x^2 + 11 at a maxima or minima?

First, take the first differential: y' = 4x^2 -12x. At x=3 y'= 0 so therefore the function is at a point of inflection. Taking the second derivative: y'' = 8x -12. At x=3 y''= 12. As 12 is greater than 0, th...
JT
Answered by James T. • Maths tutor
4200 Views

What factors influence the reaction rate?

There are 5 main factors that affect the rate of reaction. 1. Concentration: Increasing the concentration increases the frequency of collisions between particles. 2. Surface Area: Increasing the surface area...
JT
Answered by James T. • Chemistry tutor
3533 Views

Explain how the structure of RNA differs from that of DNA? (3 marks)

RNA is single-stranded, DNA is double-stranded. RNA contains the base Uracil, DNA contains thymine instead. RNA contains the sugar Ribose, DNA has Deoxyribose instead.
HM
Answered by Haider M. • Biology tutor
21909 Views