DNA History and Replication Quiz

Who initially thought that protein was the cell's hereditary material?

• Rosalind Franklin

• Erwin Chargaff

• Oswald Avery

• Frederick Griffith

Which scientist confirmed that DNA is responsible for transformation in bacteria?

• Rosalind Franklin

• Erwin Chargaff

• Oswald Avery

• Frederick Griffith

In the Hershey-Chase experiment, which substance was found to infect the bacteria?

• DNA

• Protein coat

• Both protein coat and DNA

• Neither protein coat nor DNA

What is the full form of DNA?

• Deoxyribonucleic Acid

• Ribonucleic Acid

• Deoxyribose Nucleotide Acid

• Ribose Nucleotide Acid

What are the components of a nucleotide in DNA?

• Ribose, Phosphate group, Nitrogenous base

• Ribose, Phosphate group, Amino acid

• Deoxyribose, Phosphate group, Nitrogenous base

• Deoxyribose, Phosphate group, Amino acid

According to Chargaff's rule, which bases must pair together in DNA?

• Adenine-Uracil, Guanine-Cytosine

• Adenine-Guanine, Thymine-Cytosine

• Adenine-Thymine, Guanine-Cytosine

• Adenine-Cytosine, Guanine-Thymine

What did Rosalind Franklin's x-ray photograph of DNA crystals reveal?

• Circular structure

• X shape surrounded by a circle

• Double helix structure

• Spiral staircase structure

Who built the 3-D model of DNA after seeing Franklin's x-ray image?

• Frederick Griffith

• James Watson

• Oswald Avery

• Francis Crick

What holds the bases together in the DNA double helix?

• Hydrogen bonds

• Ionic bonds

• Covalent bonds

• Peptide bonds

What is the role of DNA polymerase in DNA replication?

• It unwinds the DNA double helix

• It adds new nucleotides to the growing DNA strand

• It seals the gaps between the Okazaki fragments

• It removes the RNA primer