OpenStax 9.1 Quiz on the Structure of DNA

Who were the scientists awarded the Nobel Prize in Medicine for determining the structure of DNA?

• Linus Pauling, Rosalind Franklin, and Maurice Wilkins

• Rosalind Franklin, James Watson, and Maurice Wilkins

• Francis Crick, James Watson, and Maurice Wilkins

• Francis Crick, James Watson, and Linus Pauling

What method did Rosalind Franklin use to help understand the structure of DNA?

• Mass spectrometry

• X-ray crystallography

• Electron microscopy

• Nuclear magnetic resonance

What are the building blocks of DNA?

• Amino acids

• Nucleotides

• Fatty acids

• Monosaccharides

Which nitrogenous base is NOT found in RNA?

• Cytosine

• Adenine

• Uracil

• Thymine

What is the shape of the DNA molecule as proposed by Watson and Crick?

• Triple helix

• Double helix

• Quadruple helix

• Single helix

What is the complementary base pair for adenine in DNA?

• Cytosine

• Guanine

• Thymine

• Uracil

What is the term for the DNA structure in prokaryotes?

• Linear chromosomes

• Circular chromosomes

• Double helix

• Nucleosomes

What is the role of mRNA in the cell?

• To carry amino acids

• To form ribosomes

• To carry the DNA code to the ribosome

• To replicate DNA

What is the diameter of the DNA double helix?

• Uniform throughout

• Varies along the length

• Wider at the ends

• Narrower at the center

What is the primary function of ribosomes in the cell?

• To store genetic information

• To synthesize proteins

• To replicate DNA

• To transport lipids