Question

Biology. Structure of DNA​

Answer 1

i. 12 nucleotides. A nucleotide is a base, a sugar, and s phosphate group

ii. The circles indicate the phosphate group which makes up the backbone of the DNA strand

iii. Pentagonal structure is a pentose (5 carbon) sugar.

iv. This is not an RNA molecule because it has Thymine (represented by T) rather than Uracil. RNA is usually single stranded. There are more differences not depicted in this image.