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Describe the similarities and differences between the processes of osmosis and diffusion

Similarities:Both processes are passive (do not require energy)In both processes molecules move from an area of high concentration to low concentration and therefore down a concentration gradient.Differences...
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Answered by Grace H. • Biology tutor
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Solve the equation 18x^2-3x=6

First put the equation into the correct form by setting it to 0:18x^2-3x-6=0Look for the common factor in the equation and take it out:3(6x^2-x-2)Using the grid method (which I would show on whiteboard) fact...
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Answered by Grace H. • Maths tutor
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What are the three components that make up the Human Development Index?

HDI is a composite indicator used to rank levels of development among countries. The 3 components are:Life expectancy (years at birth)Education index (mean years of schooling/expected years of schooling)Stan...
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Answered by Grace H. • Geography tutor
11186 Views

Describe the processes of obtaining desired genes and their subsequent transfer into the cells of organisms.

In answering this question, it is important that the student outlines the steps and tools involved in the process (for learning purposes it is easier to learn the numerical steps, however, it is important th...
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Answered by Niamh G. • Biology tutor
4141 Views

Expand and simplify (x-4)(2x+3y)^2

Firstly, expand out the (2x+3y)^2 as (2x+3y)(2x+3y).Multiplying each term in the first bracket with each term from the second bracket gives 4x^2+6xy+6xy+9y^2 which simplifies to 4x^2+12xy+9y^2 by adding the ...
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Answered by Annie-May W. • Maths tutor
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