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Describe and explain how cell fractionation and ultracentrifugation can be used to isolate mitochondria from a suspension of animal cells.

It is possible to separate out the different organelles of a cell by spinning a homogenised solution of them at different speeds using an ultracentrifuge. The cells must first be placed in a cold, isotonic b...
KW
Answered by Kate W. • Biology tutor
38779 Views

What is the best way to learn facts and dates?

The best way to learn facts is in small chunks over a long period of time, so your need to organise your revision well before the exams start. Break the course up into sections (e.g. the Russian economy unde...
RE
Answered by Robert E. • History tutor
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How do I plan an English essay?

The first step is to read the question very carefully, checking it three times over to make sure that you fully understand it. The worst mistake you can make in an English essay is to write about the wrong c...
RE
3701 Views

Points A and B have coordinates (–2, 1) and (3, 4) respectively. Find the equation of the perpendicular bisector of AB and show that it may be written as 5x +3 y = 10.

Formula for a straight line y-y 1 =m(x-x 1 ), where m is the gradient substituting in the values given to find the gradient we get 4-1=m(3+2), therefore m= 3/5the midpoint of the two points is ((x 1 + x 2 )/...
PM
Answered by Paige M. • Maths tutor
8606 Views

What is the difference between factors that affect supply and the elasticity of supply?

Factors affecting supply will shift the supply curve in or out. These factors are costs of raw materials, technological advancements, wages. Factors affecting the elasticity of the supply curve will affect t...
JH
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