100 DNA History Summer 2021

Which scientists built a 3-D model of the DNA double helix?

• Hershey and Chase
• Watson and Crick
• Chargaff and Franklin
• Griffith and Avery

Rosalinda Franklin discovered DNA was ________________.

• square

• spiral

• circular

• rectangular

What does a Double Helix look like?

• Twisted ladder

• Upside down ladder

• Sideways ladder

• Double circle

Who used x ray diffraction to see DNA?

• Watson

• Chargaff

• Franklin

• Crick

Who built models of DNA and said it looked like a twisted ladder (double helix)?

• Franklin

• Sunny and Cher

• Chargaff

• Watson and Crick

Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.

• DNA
• protein
• RNA
• glucose nucleic acid (GNA)

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How did Rosalind Franklin's photo 51 affect the 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

Tags

NGSS.HS-LS1-1

Franklin used x-ray crystallography to determine the shape of the DNA molecule is

• a cloverleaf
• a braided rope
• a pleated sheet
• a twisted ladder

Watson and Crick were the first to suggest that DNA is _____

• a short molecule
• the shape of a double helix
• a protein molecule
• the genetic material

The structure of DNA was discovered in ___________________.

• 1953

• 1965

• 1900

• 1980's