Question | Answer |
What is the name of the scientist who worked with mice and pneumonia? | Frederick Griffith |
What process did Griffith discover with mice and pneumonia? | tranformation |
Name the scientist that systematically wiped out DNA, RNA, and proteins to find the transforming substance. | Oswald Avery |
Name the two scientists that used a virus and bacterial cell to prove DNA was the transforming substance. | Alfred Hershey and Martha Chase |
A virus that infects bacteria is called a | bacteriophage |
How did Hershey and Chase know which substance went into the bacterial cell? | they used a radioactive marker |
List three components of a nucleotide | sugar, phosphate, and nitrogen base |
What was Erwin Chargaff's rule? | In DNA composition, A=T and C=G |
Which scientist used x-ray diffraction to get a picture of DNA? | Rosalind Franklin |
What is it called when C pairs with G and A pairs with T. | complementary base pairing |
Name the shape of a DNA molecule. | double helix |
Name the four nitrogen bases in DNA. | adenine, cytosine, thymine, guanine |
In Griffith's experiment, did the R strain or S strain kill the mouse? | the smooth (s) strain killed it |
Which radioactive isotope was found with DNA, phosphorous-32 or sulfer-35? | phosphorous-35, there is no sulfer in DNA |