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What is active transport?

The movement of molecules from an area of high concentration to low concentration across a membrane using energy.
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Answered by Jessica W. • Biology tutor
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How should I structure my paragraphs?

I strongly advise students to follow the PEEL approach.First you write your point, in a relatively short, focused and simple sentence. You proceed to offer the quote from the text that your point relates to....
XK
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What are the benefits of an increase in the National Minimum Wage?

The national minimum wage (NMW) is a legally imposed wage floor below which wages cannot fall. By increasing the NMW workers receive higher wages. This has five major benefits. Firstly, a rise in the NMW wou...
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Answered by Xenia K. • Economics tutor
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Describe the model now used for the structure of an atom. Refer to the constituent particles including their relative masses and charges.

In an atom, the mass is concentrated in the nucleus which is at the centre of the atom. The nucleus is composed of neutrons and protons, each with a relative mass of 1. By comparison, the third component of ...
LC
Answered by Lewis C. • Physics tutor
20301 Views

Describe the energy changes as electricity is produced in a fossil fuel station.

To begin with, chemical energy in the fuel is released through combustion and becomes thermal energy. This thermal energy is used to heat water which evaporates and become steam. The rising steam turns turbi...
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Answered by Lewis C. • Physics tutor
4731 Views