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Explain how you would approach the following A-Level exam question: Discuss research into the disruption of biological rhythms (e.g. shift work and jet lag) (8 + 16 marks).

Firstly, one must consider the key words in the question to be addressed in the main body of the essay and also the number of marks available and how they are divided. Here we would highlight "discus...

Answered by Elise P. • Psychology tutor

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Simultaneously solve these equations 3x+y=7 and 3x-y=5

Method 1 (Elimination) -

You can see that If you add the 2 equations together you can eliminate the y variable like so 6x=12, then if you divide both sides by 6 you get x=2. Then if you place x=2 b...

Answered by Charlotte B. • Maths tutor

3765 Views

Describe the components of the fluid mosaic model (6).

The fluid mosaic model describes the typical plasma membrane as a phospolipid bilayer (1), composed of phosphates with fatty acid tails, which face each other inwardly. Within the phospholipid bilayer are...

Answered by Gregor C. • Biology tutor

12527 Views

Suppose a population of size x experiences growth at a rate of dx/dt = kx where t is time measured in minutes and k is a constant. At t=0, x=xo. If the population doubles in 5 minutes, how much longer does it take for the population to reach triple of Xo.

2.925 minutes This question involves solving a first order differential equation via the separation of variables and then substituting in initial conditions in order to find a particular ...

Answered by Scott W. • Maths tutor

3038 Views