Question

A nucleoside includes:

• A. Nitrogen bases only
• B. Nitrogen bases and sugar
• C. Nitrogen bases and phosphate
• D. Phosphate and sugar

Answer 1

Answer:

B. Nitrogen bases and sugar

A nucleoside is a structural component of DNA that is made up of a nucleobase and a pentose sugar molecule, whereas a nucleotide is made up of a pentose sugar molecule connected to a phosphate group and nitrogen that contains purine and pyrimidine bases.