Find and classify the following molecules as belonging to either of the four maj

Question

Find and classify the following molecules as belonging to either of the four major classes (carbohydrates, proteins, nucelic acids, lipids).

-Chitin (http://www.ceoe.udel.edu/horseshoecrab/research/chitin.html)
-a dTTP (http://en.wikipedia.org/wiki/Thymidine_triphosphate)
-A ribosyme (http://exploringorigins.org/ribozymes.html)
-Beta-galactosidase (http://en.wikipedia.org/wiki/File:Beta-galactosidase_%281tg7%29.png)
-http://upload.wikimedia.org/wikipedia/commons/1/1b/Ribulose.png
-http://biology.kenyon.edu/courses/biol114/Chap02/dna-helix.gif
-http://www.icgeb.org/~p450srv/ligand/estradiol.gif
-http://necat.chem.cornell.edu/Structures2/Struct_Pic2/3PJZ.jpg
-http://www.daviddarling.info/images/phenylalanine.png
-Adenosine monophosphate
-http://rpmedia.ask.com/ts?u=/wikipedia/commons/thumb/0/04/Lactose.svg/310px-Lactose.svg.png

Explanation / Answer

-Chitin protein
-a dTTP nucleic acid
-A ribosyme protein
-Beta-galactosidase protein (it's an enzyme)
-http://upload.wikimedia.org/wikipedia/commons/1/1b/Ribulose.png - Ribulose is a protein
-http://biology.kenyon.edu/courses/biol114/Chap02/dna-helix.gif - DNA helix is a nucleic acid
-http://www.icgeb.org/~p450srv/ligand/estradiol.gif - a ligand is a protein
-http://necat.chem.cornell.edu/Structures2/Struct_Pic2/3PJZ.jpg - a protein
-http://www.daviddarling.info/images/phenylalanine.png - an essential amino acid, aka a building block of protein
-Adenosine monophosphate - nucleic acid; also known as 5'-adenylic acid, is a nucleotide that is found in RNA.
-http://rpmedia.ask.com/ts?u=/wikipedia/commons/thumb/0/04/Lactose.svg/310px-Lactose.svg.png - lactose is a dissachiride sugar, aka a carbohydrate

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