Using absorbance at 234 nm, 280 nm, and 260 nm, you calculated the percent of proteins present in your DNA. The percent of proteins present when calculated using absorbance at 260 nm and 280 nm was much larger than the percent of proteins present calculated using absorbance at 260 nm and 234 nm. This indicated that: a. Peptides present in your DNA preparation contain a large number of amino acids, tyrosine, phenylalanine, and tryptophan. 5. Peptides present in your DNA preparation contain a small number of amino acids tyrosine, phenylalanine, and tryptophan. C. Peptides present in your DNA preparation do not contain amino acids tyrosine, phenylalanine, and tryptophan. d. Your DNA preparation is not contaminated with proteins. e. All of the above. f. None of the above.

Using absorbance at 234 nm, 280 nm, and 260 nm, you calculated the percent of proteins present in your DNA. The percent of proteins present when calculated using absorbance at 260 nm and 280 nm was much larger than the percent of proteins present calculated using absorbance at 260 nm and 234 nm. This indicated that: a. Peptides present in your DNA preparation contain a large number of amino acids, tyrosine, phenylalanine, and tryptophan. 5. Peptides present in your DNA preparation contain a small number of amino acids tyrosine, phenylalanine, and tryptophan. C. Peptides present in your DNA preparation do not contain amino acids tyrosine, phenylalanine, and tryptophan. d. Your DNA preparation is not contaminated with proteins. e. All of the above. f. None of the above.

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section: Chapter Questions

Problem 20.26P

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