Fully identify the subunit composition of a protein from the following information. Molecular mass by gel filtration: 350 kD Molecular mass by SDS-PAGE: 200 kD and 150 kD Molecular mass by SDS-PAGE with 2-mercaptoethanol: 100 kD, 80 kD, and 70 kD -S-S- is a disulfide bond and [ ][ ] are non-covalent associations A). [100-S-S-100][80-S-S-70] B). [100-S-S-80][100-S-S-70] C). [100-S-S-100-S-70][80] D). [100-S-S-100-S-80][70] E). [100-S-S-100-S-70-S-S-80]

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

your answer is c) plasma

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