Question

POSSIBLE POINTS: 2

The image shows a nucleotide, a building block of the DNA molecule. Label the components of a nucleotide

Answer 1

The answers are:

The blue building block - Phosphate group

The grey building block - 5- carbon sugar

The green building block - nitrogenous base.

Outside the green building block - Adenine

Answer 2

The 5-carbon sugar is usually represented by a pentagon shape (which would likely be the gray pentagon in the middle if the diagram follows conventional representation). The phosphate group is often represented by a circle (which would likely be the blue circle in the diagram). The nitrogenous base is typically depicted as a complex structure with rings.

In a nucleotide, the components are:

A 5-carbon sugar (deoxyribose in DNA),

A phosphate group, and

A nitrogenous base.

So, the labels should be placed as follows:

The blue circle should be labeled as "phosphate group."

The gray pentagon should be labeled as "5-carbon sugar."

The green structure marked with "A" should be labeled as "adenine," which is a type of nitrogenous base.