The shape of hair is determined in part by the pattern of disulfide bonds in keratin, its major protein. from first to last, arrange the five steps needed to induce permanent curls in hair. first step last step last step answer bank keratin's a-helices convert to b-sheets. keratin's disulfide bonds break. physically curl the hair. apply an oxidizing agent. keratin's disulfide bonds reform to hold shape. apply a thiol-containing reagent and gentle heat. keratin's amino acids rearrange into the curled conformation.

What effect does nuclear radiation have on atoms?

A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.

List the path of the respiratory system