What Substrate Forms a Colored Product in the Presence Of \beta

question 18

Multiple Choice

What substrate forms a colored product in the presence of $\beta$ -galactosidase?

• A) p-nitrophenyl galactose
• B) Coomassie-galactose
• C) ethidium-galactose
• D) X-gal
• E) None of the answers is correct.

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