In its attempt to suppress allergic responses, the body releases several chemicals which have a role in mediating physical reactions. epinephrine, which interferes with vasoactive chemical release from mast cells, is instrumental in suppressing which type of hypersensitivity response? a. type ib. type iic. type iiid. type iv

a. Type 1 hypersensistivity response.

Explanation:

IgE antibodies related to an antigen are produced by stimulated B cells in type 1 hypersenstivty. IgE signalling results in mast cell degranulation and this leads to vasodilation.  Histamines, Leucotriens and Prostaglandins are some of the Vasoactive compounds released by Mast cells. Type 1 hypersenstivity is usually treated wit adrenaline (epinephrine).

Epinephrine increases peripheral resistance by stimulatingof α adrenoceptorsvascular thus improving blood pressure and coronary perfusion, reversing peripheral vasodilation, and decreasing angioedema. Stimulation of β2 receptors causes bronchodilation as well as increasing intracellular cyclic adenosine monophosphate production in mast cells and basophils, reducing release of inflammatory mediators and thus reducing the effect caused by mast cells.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation:

a community that experiences major changes undergoes progress