DNA History and Structure

Who built the first accurate model of a DNA molecule?

• Avery

• Hershey and Chase

• Watson and Crick

• Franklin

Who discovered that the amount of A=T and the amount of G=C?

• Griffith

• Chargaff

• Avery

• Wilkins

Who discovered that a "transforming factor" can turn harmless bacteria into harmful bacteria?

• Griffith

• Avery

• Watson

• Crick

Who took x-ray pictures of DNA?

• Watson

• Franklin

• Crick

• Hershey

Who determined that genes are composed of DNA?

• Avery

• Wilkins

• Chargaff

• Griffith

Who used bacteriophages to prove that DNA, not protein, is the genetic material?

• Hershey and Chase

• Watson and Crick

• Wilkins and Franklin

• Avery and Griffith

What is the monomer of DNA?

• Amino acid

• Phosphate

• Nucleotide

• Deoxyribose

What 2 components make up the sides of the DNA ladder?

• Sugar and adenine

• Deoxyribose and thymine

• Sugar and phosphate

• Cytosine and guanine

How are base pairs held together?

• Hydrogen bonds

• Covalent bonds

• Nitrogen bonds

• Sugar bonds

Which 2 bases are pyrimidines

• Cytosine and guanine

• Adenine and guanine

• Adenine and thymine

• Thymine and cytosine