Agene mutation causes the ldl receptor to have a different shape so that it no longer interacts with ldl and receptor-mediated endocytosis is not stimulated to take ldl into cells. ldl then increases in the extracellular fluid, which includes plasma in the bloodstream, causing high blood levels of ldl. ldl is a transport particle for cholesterol, and is known as "bad cholesterol." this is an example of which theme in physiology?

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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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