Biology Unit

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

• 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

How did Rosalind Franklin's photo 51 affect the work of Watson and Crick? (picture is shown)

• It was used to determine the physical structure of DNA
• Watson kept it under his pillow for inspiration
• 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

Frederick Griffith worked with two types of ________ bacteria

• paramecium
• E. coli
• streptococcus
• acidophilus

S-strain bacteria that Griffith worked with

• caused pneumonia
• had a smooth appearance
• killed mice
• all of these

Griffith discovered

• that DNA was the genetic material
• that R-strain had transformed into S-strain
• that x-rays can take pictures of DNA
• that mice aren't very good for genetic studies

Oswald Avery discovered

• DNA was the transforming principle
• that there is more phosphorus in DNA than in protein
• how viruses work
• that Watson stole a photo from Franklin

The two scientists that confirmed that DNA was what bacteriophages inject into bacteria were

• Hershey and Chase
• Watson and Crick
• Franklin and Wilkins
• Nestle and Quick

The name given to the shape of DNA is

• double helix
• alpha spiral
• corkscrew ladder
• twisty slide

Who took the definitive picture of DNA using x-rays?

• Rosalind Franklin
• James Watson
• Erwin Chargaff
• Benjamin Franklin