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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 ...

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 stimulat...

It can lead to an increase in the population size of strains of antibiotic-resistant bacteria, such as MRSA

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 'excit...

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...