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What are emergent properties?

Multicellular organisms show emergent properties; these are properties that exist due to many different components working together. For example, your lungs work and help you breathe due to all of the cells ...
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Answered by Helen A. • Biology tutor
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Explain how an impulse is transmitted between nerve cells.

An impulse reaches the pre-synaptic neurone, as it does so, the impulse stimulates voltage-gated calcium channels to open, allowing an influx of calcium ions into the pre-synaptic bouton. This stimulates ves...
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Answered by Jasmine K. • Biology tutor
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Why is the overuse of antibiotics dangerous?

It can lead to an increase in the population size of strains of antibiotic-resistant bacteria, such as MRSA
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Answered by Suzy A. • Biology tutor
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What factors affect photosynthesis and why?

Temperature - the light-independent reaction is temperature sensitive due to being enzymed controlled CO2 - Is needed as a source of carbon Light intensity- Needed to 'excite' the chlorophyll (allow their el...
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Answered by Millie O. • Biology tutor
3201 Views

Explain why an enzyme like maltase is specific to the breakdown of maltose.

With A-level biology it is just as important to know how to answer the question and what the examiners are looking for as it is to have the knowledge to do so. There are common questions that examiners ask e...
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Answered by James J. • Biology tutor
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