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The synapse is a structure that permits a neuron to send an electrical or chemical signal to another neuron. It is where neurones can communicate with each other.
It contains a pre-synapti...
Both DNA and RNA a nucleic acids, made up of nucleotides, that encode genetic information. A nucleotide is a molecule composed of phosphate, sugar and a base, and these nucleotides bind to one another to ...
There is VARIATION amongst the population due to naturally occuring MUTATION during DNA replication . The antibiotics act as a SELECTION PRESSURE, so only the bacteria with the allele for antibiotic resis...
Here are the endocrine glands that regulate sexual activity in males: 1) the hypophysis (aka. the pituitary); 2) the adrenal glands; 3) the gonad...
Excitation from SAN (sino-atrial node) spreads across atria, causing them to contract first. The excitation is conducted to the AV (atri...
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