Examlex
Which one of the following terms does not apply to the phylum Chordata?
Magnetic Fields
Invisible forces that exert a magnetic influence on moving electric charges, affecting the behavior of charged particles in the vicinity.
Electrical Signals
The method by which neurons communicate and transmit information through action potentials and synapses in the nervous system.
Radiochemicals
Radiochemicals are chemical compounds that are radioactive, often used in medical diagnostics, research, and nuclear industries.
PET
A diagnostic imaging technique that uses radioactive tracers to visualize and measure changes in metabolic processes and other physiological activities in the body.
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