2.1.3

Nucleotide is the monomer, and nucleic acid is the polymer.

• True

• False

What specific sugar does DNA contain?

Which of these statements about a DNA nucleotide is NOT correct?

• It contains a phosphate ion bound to carbon 5.

• It contains a nitrogenous base bound to carbon 3.

• It contains a pentose sugar.

• There are different 4 types of nucleotide.

Nitrogenous bases can be divided into 2 groups: purines and pyrimidines. Which of the 4 bases are pyrimidines (choose all).

• Cytosine

• Adenine

• Guanine

• Thymine.

Nitrogenous bases can be divided into 2 groups: purines and pyrimidines. How many carbon rings do purines contain?

• one

• two

What specific sugar does RNA contain?

Name the additional nitrogenous base found in RNA.