Aclient is presenting an anaphylactic response to unknowingly ingesting nuts at a family celebration. what type of hypersensitivity did this client exhibit?

Type I, atopic or anaphylactic

Type I hypersensitivity is an immediate allergic reaction. It is caused by a reexposure to a foreign substance or an allergen--in this case, nuts. Allergens are antigens that was exposed to the client via ingestion. Antibody IgE mediates the anaphylactic repsonse.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.