Nucleic Acids

What is the monomer of nucleic acids?

• Amino acids

• Phosphate groups

• Ribose or deoxyribose sugars

• Nitrogenous bases

• Nucleotides

Which of the following are components of a nucleotide? Select all that apply!

• A pentose sugar

• A phosphate group

• A nitrogenous base

• A carboxyl group

• A ribose sugar

A ___________ bond forms between the pentose sugar of one nucleotide and the phosphate group of another

• Hydrogen

• Ionic

• Peptide

• Phosphodiester

• Phosphoglyceric

Which of the following nitrogenous bases are NOT found in RNA?

• Uracil

• Thymine

• Guanine

• Adenine

• Cytosine

What does DNA stand for?

• Deoxyribonucleic acid

• Deuracilnucleic acid

• Diesternucleic acid

• Deribonitrogenous acid

• Diesternitrogenous acid

Guanine forms ______ phosphodiester bond(s) with cytosine.

• One

• Two

• Three

• None, they form hydrogen bonds

Which bases can pair with adenine? Select all that apply!

• Adenine

• Thymine

• Guanine

• Cytosine

• Uracil

DNA is more stable because its pentose sugar has a ______ on the 2' carbon, unlike ribose.

• Hydrogen (H)

• Hydrogen ion (H+)

• Hydroxyl group (OH)

• Carboxyl group (COOH)

• Phosphate group (PO4)

Which of the following nitrogenous bases are pyrimidines? Select all that apply!

• Thymine

• Uracil

• Adenine

• Cytosine

• Guanine

Which of the following nitrogenous bases have a two-ring structure? Select all that apply!

• Thymine

• Uracil

• Adenine

• Cytosine

• Guanine