DNA Structure and Function Quiz

What are the basic building blocks of DNA called?

• Amino acids

• Nucleotides

• Proteins

• Lipids

Which of the following bases pair together in DNA?

• Adenine - Guanine

• Thymine - Cytosine

• Adenine - Thymine

• Guanine - Thymine

What forms the sides of the DNA ladder?

• Sugars and phosphates

• Amino acids

• Proteins

• Bases

How are the chains of DNA arranged?

• Triple helix

• Double helix

• Single strand

• Quadruple helix

What is the function of DNA?

• It transports oxygen

• It stores energy

• It provides structural support

• It acts as a template for its own replication

Which enzyme is responsible for unwinding the DNA double helix during replication?

• Helicase

• Ligase

• Polymerase

• Primase

What type of bond holds the two strands of DNA together?

• Covalent bonds

• Hydrogen bonds

• Ionic bonds

• Metallic bonds

Which of the following is a purine base in DNA?

• Cytosine

• Thymine

• Adenine

• Uracil

Which molecule carries the genetic instructions from DNA to the ribosome?

• tRNA

• mRNA

• rRNA

• DNA

What is the role of DNA polymerase in DNA replication?

• It unwinds the DNA double helix

• It synthesizes new DNA strands

• It joins Okazaki fragments

• It adds RNA primers