Watson and Crick

Built models to determine that DNA was a double helix shape with base pairs A-T and G-C in rungs between the sugar/phosphate backbone of DNA.

• Watson & Crick

• Franklin

• Wilkins

• Pauling

• Chargaff

Tags

NGSS.HS-LS1-1

Using x-ray diffraction to determine the structure of a crystal, such as DNA

• x-ray crystallography

• gas chromatography

• chromatography

• gel electrophoresis

Tags

NGSS.HS-LS1-1

A pair of parallel strands that twist together about an axis

• nucleotide

• double helix

• base pair

• esther bonds

Base pairs (correctly matched)

• A-G and C-T

• A-C and G-T

• A-T and G-C

• C-A and T-G

basic structural unit of DNA. Examples: adenine, guanine, cytosine, thymine

• nucleotide

• phosphate

• ribose sugar

• enzyme

What is the name of the two scientists who used Rosalind Franklin's X-ray image to determine the double helix shape of DNA?

• Watson and Crick

• Watson and Franklin

• Crick and Franklin

• Sherlock and Watson

Tags

NGSS.HS-LS1-1

What is the twisted ladder shape of DNA called?

• double helix

• single helix

• stringy ladder

• ladder

Tags

NGSS.HS-LS1-1

What scientific technique did Watson and Crick use to determine the structure of DNA?

• X-ray crystallography

• Gas chromatography

• Chromatography

• Gel electrophoresis

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

• Nucleotide

• Double helix

• Base pair

• Ester bonds

Which base pairs are correctly matched in the DNA structure according to Watson and Crick's model?

• A-G and C-T

• A-C and G-T

• A-T and G-C

• C-A and T-G