etG Discover DNA 1.5.24

Who took a picture of DNA using X-ray diffraction?

• Rosalind Franklin

• Watson & Crick

• Oswald Avery

• Hershey & Chase

Who developed the double-helix model of DNA?

• Watson & Crick

• Avery

• Hershey & Chase

• Franklin

Who discovered that A = T and C = G?

• Chargaff

• Franklin

• Watson & Crick

• Griffith

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids
• nucleotides
• fatty acids
• polysaccharides

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

DNA and RNA are macromolecules in the category of

• Proteins
• Lipids
• Nucleic Acids
• Carbohydrates

How did Rosalind Franklin's photo 51 affect th work of Watson and Crick?

• It was used to determine the physical structure of DNA
• It was used to identify the four bases that make up DNA
• It was used to determine the theory of independent assortment
• It was used to show DNA was the molecule of inheritance

What questions do you have about DNA?