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Biology, 28.09.2021 21:00 ajfijeoinf2750

You are given four test tubes containing purified biological macromolecules. The test tubes are unlabeled except for a number between 1 and 4. You are told that one test tube contains a protein, one contains a lipid, one contains a carbohydrate, and one contains a nucleic acid. You then perform some tests on the macromolecules and collect the following information: 1) Test tubes #2 and #4 contain nitrogen, but the other tubes do not.

2) The contents of test tube #3 are not soluble in water, but the contents of the other test tubes are soluble in water.

3) The contents of test tube #1 can be broken down into subunits that are all exactly identical to each other.

4) The macromolecule in test tube #2 is found to have a globular shape.

What are the identities of the macromolecules present in the four test tubes?

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