Question

A purine with an amine (NH2) group on the 6th carbon is
A.adenine
B. cytosine
C. thymine
D. guanine

Answer 1

A.adenine
HOPE IT HELPS
PLZ!!! MRK AS BRAINLIST

Answer 2

A purine with an amine (NH2) group on the 6th carbon is A.adenine.

• Adenine, guanine, cytosine and uracil are four nitrogenous bases and constitute nucleotides of DNA with ribose sugar r and a phosphate group.
• Uracil is the nucleotide present in RNA in place of thymine.
• Uracil differs from thiamine by a methyl group present at 5 positions of thiamine.
• Adenine and guanine are purines while thiamine, cytosine and uracil are pyrimidines.
• NH2 is present in adenine, guanine and cytosine.
• NH2 is present at the 2nd position of guanine while cytosine contains the NH2 group at the 4th position.