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What is a nerve synapse and how does it work?

What is a nerve synapse? A synapse refers to the junction between two neurons. When an impulse (action potential) reaches the end of a neuron (the pre-synaptic neuron), the synapse allows this signal to be t...
JH
Answered by Jamie H. • Biology tutor
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Why do markets fail?

In competitive markets, the free market mechanism is in most cases the most efficient. However sometimes, these markets fail indicating a requirement for government intervention. The most famous example is t...
CS
Answered by Callum S. • Economics tutor
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Describe 3 ways in which the lungs are adapted to allow efficient gas exchange

Large surface area -Cell wall of alveoli is one cell thick -Good Blood supply
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Answered by Roshni V. • Biology tutor
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List 5 processes for which mammals need energy

To maintain a constant body temperature -To aid growth To allow muscle contraction For active transport -For protein synthesis
RV
Answered by Roshni V. • Biology tutor
2837 Views

Describe the sequence of events that create an action potential

Before an action potential can even start, it is important to remember that there are already uneven concentrations of ions over the membrane. Potassium ions are at a higher concentration inside the cell, wh...
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Answered by Rebecca J. • Biology tutor
51593 Views