AUG GGC UCA
Is this a strand of DNA or RNA, and how can you tell?
Uracil | SIELC
a
RNA because it has inorganic phosphate groups
b
RNA because it has the nitrogen base, Uracil.
c
DNA because it has the sugar, Ribose
d
DNA because it has the nitrogen base, Adenine
b
RNA because it has the nitrogen base, Uracil.
Uracil is one of the four nitrogen bases used in RNA, replacing thymine which is found in DNA. The presence of Uracil (denoted by "U") clearly indicates that the strand is RNA. DNA does not contain Uracil; instead, it uses Thymine (denoted by "T"). The other options are incorrect: DNA has deoxyribose sugar, not ribose, and the presence of organic phosphate groups does not distinguish DNA from RNA, as both have phosphate groups. Adenine (denoted by "A") is found in both DNA and RNA, so its presence would not be unique to DNA.