Quiz on DNA Structure and Function

What did Frederick Griffith's experiments demonstrate in 1928?

• DNA is a protein

• DNA is the hereditary material

• RNA is the genetic material

• Proteins carry genetic information

What did Oswald Avery and his team identify in 1944?

• The molecules responsible for transformation in S-strain

• The structure of RNA

• The role of histones in DNA

• The function of ribosomes

Which experiment confirmed that DNA is the genetic material using bacteriophages?

• Avery's experiment

• Hershey and Chase experiment

• Meselson and Stahl experiment

• Griffith's experiment

What is Chargaff's rule?

• Adenine equals thymine

• Cytosine equals uracil

• Adenine equals guanine

• Guanine equals thymine

Who proposed the double helix structure of DNA?

• James Watson and Francis Crick

• Linus Pauling

• Maurice Wilkins

• Rosalind Franklin

What is the primary function of telomeres?

• To code for proteins

• To facilitate DNA replication

• To protect chromosome ends

• To regulate gene expression

What model of DNA replication was confirmed by Meselson and Stahl?

• Semi-conservative model

• Linear model

• Dispersive model

• Conservative model

What is the role of helicase in DNA replication?

• To add nucleotides

• To synthesize RNA primers

• To unwind the DNA strands

• To proofread the DNA

What are Okazaki fragments?

• Short DNA segments on the leading strand

• Segments of RNA

• Pieces of protein

• Short DNA segments on the lagging strand

What is the central dogma of genetics?

• Protein to RNA to DNA

• DNA to protein to RNA

• RNA to DNA to protein

• DNA to RNA to protein