Question

what is label # 3 pointing to?
thymine
hydrogen bond
guanine
cytosine
adenine
deoxyribose sugar
phosphate

Explanation:

In DNA structure, the components are phosphate (circular), deoxyribose sugar (pentagon - shaped), and nitrogenous bases (hexagon - shaped). Label 3 is a pentagon - shaped structure, which is characteristic of deoxyribose sugar. Thymine, guanine, cytosine, adenine are nitrogenous bases (hexagon - like in the diagram's representation of DNA structure). Hydrogen bond is the bond between nitrogenous bases (not a single - shaped component). Phosphate is circular.

Answer:

deoxyribose sugar