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Draw the structure of a cell membrane (6 marks).

I would draw a diagram showing the structure of a cell membrane and explain each of the parts:The cell membrane is composed of a phospholipid bilayer which is composed of a hydrophilic head and a hydrophobic...
PM
Answered by Pravir M. • Biology tutor
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For the curve y = 2x^2+4x+5, find the co-ordinates of the stationary point and determine whether it is a minimum or maximum point.

Stationary points occurs when the gradient of the graph is equal to 0, i.e. dy/dx = 0. Differentiate y with respect to x to get dy/dx = 4x + 4.So making 4x + 4 = 0 gives x = -1. Substituting this into the or...
OB
Answered by Owen B. • Maths tutor
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Explain two differences between procedural and episodic memory

Procedural memories are subjected to the unconscious mind and can not be explained verbally (non-declarative) they are concerned with how to do something and not with the rules of what to do; whereas episodi...
JC
Answered by Jack C. • Psychology tutor
24570 Views

Find the x co-ordinate of stationary point of the graph y=5x^3 +3x

When you differentiate the function that gives the gradient. Therefore differentiate to get dy/dx= 15x^2 + 3. Make this equal to 0 to get 15x^2 + 3=0 and rearrange to get the value of x as required so 15x^2=...
VJ
Answered by Vinay J. • Maths tutor
3823 Views

briefly outline and evaluate one research study into the evolutionary causes of aggression (4 marks)

In a 1988 study, Daly and Wilson propose that marital aggression can be explained as an adaptive response. They suggest that the evolutionary desire to ensure the propagation of one's own DNA has resulted in...
SQ
Answered by Sadia Q. • Psychology tutor
4760 Views