8.1

Question 1

Griffith’s experiment

Answer 1

trying to develop a vaccine for pneumonia. R- strain not deadly S- strain deadly Heat killed s- strain- not deadly r starn plus heat killed s- strain deadly

This process was called transformation did not know that DNA was the transforming factor

Question 2

Avery, Macleod, and McCarty

Answer 2

wanted to determine if DNA or proteins were the transforming factor. tested DNA, protein, enzymes, and RNA

Transformation cannot happen nwithout DNA

Question 3

Hershey and Chase

Answer 3

Used T2 bacterophages which contain a protein shell and DNA on the inside. Vrisues infect bacteria and DNA infected bacteria came out not protein bacteria

Question 4

Chargraffs rules

Answer 4

1. # of guanine unites = cytosine, adenine = thymine
2. amount o A,C,T,G varies for genetic diversity

Question 5

Parts of a nucleotide

Answer 5

Phosphate, deoxyribose sugar, and a nitrogenous base

Question 6

DNA strands are antiparallel

Answer 6

Complementary strands run in opposite directions

Phosphate- 5’
Hydroxyl- 3’

Question 7

What bond holds nucleotides together

Answer 7

Hydrogen