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What is active transport?

This is a form of movement of molecules. This is the movement of molecules from an area of low concentration to an area of high concentration (against the concentration gradient) across a membrane. As it is ...
ZW
Answered by Zimeng W. • Biology tutor
3187 Views

What are the differences between standing waves and progressive waves?

Energy is not transferred in a standing waves whereas in progressive waves energy is transferred in the direction the wave is travelling in.In standing waves, nodes and antinodes exist which are the points o...
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Answered by Zimeng W. • Physics tutor
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Meiosis and mitosis are different types of division in human cells. Compare the two processes by referring to where each takes place and the kind of products that are made.

Meiosis is a mechanism of sexual cell division used to generate gametes, or sex cells, in reproductive organs. For example, generation of eggs in ovaries. By contrast, mitosis is an asexual method of cell di...
MC
Answered by Megan C. • Biology tutor
19556 Views

How to ensure your Essay makes sense under timed conditions.

Firstly, Keep it simple . This might seem counter-intuative, surely you want to wow the marker with your mastery of the finer points of the english language? The fact is though if the examiner can't understa...
AV
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What is a good method to go about sketching a polynomial?

Let's do an example. Sketch: y=x^3 - 2 x^2 - x + 2. First we need to find out where the curve crosses the x and y axes. Look at the x axis first. We factorise the expression if we can. The best method to fac...
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Answered by Charlotte J. • Maths tutor
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