Adenosine, guanosine, thymidine, uridine...

Adenosine, guanosine, thymidine, uridine, cytidine are all but adenylic acid, guanylic acid, uridylic acid, cytidylic acid are ___.

A

nucleotides, nucleosides

B

nucleosides, nucleotides

C

nucleotides, nucleic acids

D

nucleosides, nucleic acid

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The correct Answer is:

B

Adenosine, guanosine, thymidine, uridine, cytidine are all ____ but adenylic acid, guanylic acid, uridylic acid, cytidylic acid are _______.