Question

Guanosine triphosphate (GTP) is a nucleotide which consists of a 5-carbon sugar attached to guanine via a C-N bond between carbon {blank - i think the answer is c1} of ribose and {blank - i think the answer is n9} nitrogen of guanine, with a triphosphate group attached at carbon {blank} of ribose.

please answer the places that are left blank in order to complete the sentence. I think I know the first two answers but I definitely dont know about the last one.

Answer 1

Please look in the image for structure of the Guanosine triphosphate (GTP):

In this structure, C1 of ribose is joined to N9 nitrogen of guanaine by glycosideic bond . The C5 of carbon is joined to the triphosphate.

That's why right option is :

blank1: C1 or carbon 1

blank 2: N9 or Nitrogen 9

blank 3: C5 or Carbon 5