Bases of Life

Double Helix

The form of native DNA referring to its two adjacent polynucleotide strands intertwined into a special shape

Each nucleotide base has

Protruding functional groups (purine/pyrimidine complements) that form hydrogen bonds with their appropriate partner

C-T base pair has functional groups that form

3 hydrogen bonds

A-T base pair has functional groups that form

2 hydrogen bonds

The two things that make up chromosomes

Protein and DNA

DNA has 4 ________, while ________ has 20 different _______

Nucleotides, protein, R-groups

What virus did the Hershey and Chase Blender Experiments use on the bacteria? What two things did the virus contain? What bacteria was affected by the virus?

Bacteriaphage; Protein and DNA; E. Coli

Why was the Hershey and Chase experiment called the Blender Experiment?

Because they put everything in a blender to mix the E. Coli and Bacteriaphage all together

What was the Centrifuge used in the Blender Experiment for?

To separate the part of the virus that got knocked off from the rest of the virus

What parts of the Bacteriaphage got knocked off?

The protein coat

What did they use to label the different parts of the bacteria? Which label got which each part?

They used radioactive isotopes of phosphorus and sulfur; ³²P goes with Phosphorus as the radioactive isotopes for DNA, and ³⁵S goes with Sulfur as the radioactive isotopes for Protein

What is the supernatent and the bacterial pellet?

The Supernatant is the part of the centrifuge containing the protein coats, while the bacterial pellet contained the E. Coli and the DNA from the Virus