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How does osmosis work?

Thinking of osmosis represented by two water towers attatched with a pipe at the bottom helped me to understand. If one tower has a higher level of water than the other, water will flow into the other to eve...
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Answered by Helena B. • Biology tutor
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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
4203 Views

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
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