A Scientist Observed a Chemical That Changes to Bright Red

A scientist observed a chemical that changes to bright red in the presence of organic compounds containing nitrogen and phosphorus.To test this chemical,a set of test tubes each containing a purified sample of one of the following organic compounds is prepared.The chemical is then added to each tube.The test tube containing ________ will always turn bright red.

A) nucleic acids
B) proteins
C) carbohydrates
D) phospholipids

Correct Answer:

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