Question

Use the drop-down menus to label the parts of a

Answer 1

Answer:

A. phosophate group

B. sugar

C. nitrogeous

D. nitrogeous

E. sugar

F. phosophate group

Answer 2

Answer:

A and F are phosphate groups.

B and E are sugars.

C and D are nitrogenous bases.

Explanation:

Nucleotides are the molecules responsible for composing DNA and RNA. They are formed by three units: a phosphate group, a sugar molecule and a nitrogenous base.

The sugar molecule is a pentose, which means that it is a molecule formed by 5 carbons. These collections are represented by geometrical figures such as the letters "B" and "E" shown in the figure above, where each tip represents a carbon.

The nitrogenous bases are molecules that are named adenine (A) and guanine (G) and the pyrimidine bases cytosine (C), uracil (U) and thymine (T).

The phosphate group, in turn, is a molecule derived from phosphoric acid and is the only one that does not vary in each nucleotide.