An experiment was conducted in which a purified protein from the body was exposed to a solution high in urea, and its tertiary structure was lost. When it was removed from the solution, the protein regained its original structure.
Which of the following describes what is occurring when the protein is exposed to the solution high in urea?
The side chains of the protein react with the urea, breaking bonds, which causes a conformation change.
The sequence of amino acids rearranges in a toxic environment, which causes a conformation change.
Urea reacts with the side chains of the protein sequence that causes a conformation change.
The side chains of the protein react with urea, forming new bonds that cause a conformation change.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

hammurabi rulers

good lesson