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What is the differences and simalarities between diffusion and osmosis?

Diffusion may be simple, whereby solutes travel through the phospholipids in the cell membrane as they have the same polarity as a lipid or are small enough to do so.Or, diffusion is faciliated and this is w...
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Answered by Eloise L. • Biology tutor
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What are tropisms?

A tropism is a growth in a plant in response to a stimulus. The stimulus could be a change in the direction of light or a water source. To recap, a stimulus is a change in the environment of an organism that...
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Answered by Holly P. • Biology tutor
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Explain the exchange of oxygen between an alveolus and a capillary.

The blood in the capillary has just returned to the lungs from the rest of the body, so contains a low concentration of oxygen. The alveolus contains air that has just been breathed in by ventilation, so it ...
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Answered by Anastasia D. • Biology tutor
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Work out area of shaded region in terms of pi. (https://prnt.sc/hqfbsl) [Question link]

Area of square : Base x Height. Area of Circle : π x (Radius) 2 . Looking at the diagram we are given the dimensions of the base or height of the cube (as all sides are equal in a square) and the diameter of...
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Answered by Mohammed A. • Maths tutor
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What are the impacts on host countries of voluntary migration?

Using the UK as a case study, voluntary migration has benefits and costs to the host nantion. Voulntary migration can help balance demographic changes to sustain a healthy working age population. In doing to...
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