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There are three compartments to consider- the presynaptic neuron, the synaptic cleft and the postsynaptic neuron. In a classical excitatory synapse: 1. An action potential arrives at the presynaptic neuro...

 The key is the enzyme and substrate is the lock. Like a key only unlocks one lock, the active site on the enzyme only fits in 1 type of substrate. Extreme temperature or pH (how acidic something is) dena...

Alleles are different versions of a gene. A gene is the piece of DNA which carries information in the form of a sequence of amino acids. For every gene that we have, we carry 2 alleles which could be the ...

Genetic diversity within a population is the variety of different alleles (versions) of genes present, which lead to a variety of phenotypes. It is important for a number of reasons, such preventing inbre...

One sample of bacteria was grown in a nutrient broth containing light nitrogen (N¹⁴) and one was grown in a broth with heavy nitrogen (N¹⁵). The bacteria took up the nitrogen to make...