Question

True or false: in the sequence aggcct, an available phosphate group would be found at the 5' end of the nucleotide labeled "t."

Answer 1

The answer is false.

an available phosphate group would be found at the 5' end of the nucleotide labeled A. The 5′-end of a DNA contains a phosphate group that is  attached to the 5′ carbon of the ribose ring and that A phosphate group  permits ligation of two nucleotides ( phosphodiester bond).