Ultraviolet (UV)light can be used to estimate concentrations of proteins in solutions because tryptophan and tyrosine absorb light at a wavelength of 280 nm.

Question

Quizplus · Accepted Answer

This statement is true. Tryptophan and tyrosine have an absorption peak at 280 nm, so the absorbance of light by these amino acids can be used to estimate the concentration of proteins in a solution. This is known as the method of UV spectroscopy or UV spectrophotometry.

Ultraviolet (UV)light Can Be Used to Estimate Concentrations of Proteins