4.1 Study Guide

Question 1

What disease was Griffith researching?

Answer 1

Pneumonia

Question 2

What did Griffith call the process of one strand of bacteria acquiring a factor from another bacteria?

Answer 2

Transformation

Question 3

What is Chargaff´s first rule?

Answer 3

In any double-stranded DNA, the Number of Guanine Units- Cytosine and the number of adenine-thymine

Question 4

What is Chargaff´s, Second Rule?

Answer 4

The amount of A, C, G, and T varies from one species to the not account for genetic diversity between species

Question 5

Avery, MacLeod, and McCarty wanted to find the transforming factor in Griffith´s experiment because…

Answer 5

They wanted to determine if protein or DNA was the transforming factor and therefore responsible for heredity

Question 6

What happened after Avery and his team discovered the transforming factor?

Answer 6

Scientists were still skeptical that DNA was responsible for heredity.

Question 7

What base pairs are found in DNA?

Answer 7

Adenine, Thymine, Guanine, and Cytosine

Question 8

What does Antiparallel mean?

Answer 8

The DNA runs in opposite directions from each other.

Question 9

What type of bond holds the nucleotides together to create the sugar/phosphate backbone?

Answer 9

Covalent bonds

Question 10

What is the difference between pyrimidine and purine?

Answer 10

Pyrimidine- 1 ring
Purine- 2 rings