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What is the difference between a competitive and a non-competitive inhibitor?

Inhibitors are molecules that stop substrates from being able to bind to their enzymes, and therefore inhibit the action of specific enzymes. A competitive inhibitor is an inhibitor which has a similar shape...
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Answered by Sreya C. • Biology tutor
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How are action potentials generated in a neuron?

A stimulus at the receptor end of the neuron causes the membrane to become more permeable to Na+ ions. Because there is a higher concentration of Na+ on the outside of the cell the flood into the cell down t...
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Answered by Alexander N. • Biology tutor
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Suggest how the two sub-species have developed from a single ancestral population.

Two populations become separated by a barrier such as sea (geographical separation). As a result populations cannot interbreed, hence gene flow between two populations is prevented. As a consequence, only a ...
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Answered by Maja S. • Biology tutor
3503 Views

What is the difference between haemodialysis and peritoneal dialysis?

Both are forms of treatment for kidney failure so the blood is left unfiltered as this is one of the main functions of the kidneys. In haemodialysis all of the blood is filtered and it is done externally thr...
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Answered by Vaibhi D. • Biology tutor
14265 Views

Describe the series of events from the arrival of an action potential at the pre-synaptic membrane of a cholinergic synapse to the generation of a new action potential at the post synaptic membrane?

An action potential arriving at the pre-synaptic membrane stimulates voltage-gated calcium channels to open and calcium ions diffuse into the neuron through these calcium channels. Influx of calcium causes s...
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Answered by Daniella Z. • Biology tutor
12226 Views