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: a. Test tubes #2 and #4 contain nitrogen, but the other tubes do not. b. The contents of test tube #3 are not soluble in water, but the contents of the other test tubes are soluble in water. c. The contents of test tube #1 can be broken down into subunits that are all exactly identical to each other. d. 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? Explain how you arrived at your decision.

 

I've been trying to figure this out for awhile.. Yeah weird habit,..

 

Heh.

 

Anyone who thinks they can figure it out, don't hesitate.

1 carbohydrates , break down into sugar subunits (ie glucose)

2 protein , globular shape

3 lipid , is not soluable in water.

4 nucleic acid has nitrogen base

1) Carbohydrates - long polymer of repeating units

2) Protien - globular shape

3) Lipids - not soluble in water

4) Nucleic acid has nitrogenous base.

 

What adam said