21. The quantitation of proteins by detecting their absorbance at ~280 nm (UV region) is due to the large absorbtivity of the __________ amino acids.
(A) anionic
(B) aromatic
(C) cleaved
(D) dansylated
(E) polar

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統計: A(0), B(1), C(0), D(0), E(0) #3853326