If an organic nerve toxin (acting at the neuromuscular junction) renders the ion channel of postsynaptic acetylcholine receptors permanently open, the toxin would be most likely to:

The answer is convulsions. This occurs when there are continuous involuntary contraction and relaxation of muscle of the body as a result of a continuous unchecked transmission of impulse by neurons to the muscles. This can only occur if the ion channels of the neurons are continually kept open, such as by the toxin in this case.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?