Chapter 6.2: The Watson and Crick Double Helix Model of DNA Flashcards
1
Q
Describe complementary base pairing?
A
A-T forms 2 hydrogen bonds
G-C forms 3 hydrogen bonds
2
Q
Define hydrogen bonds?
A
weak electrostatic bonds that result in a partial sharing of hydrogen atoms between reacting groups
3
Q
What are weak electrostatic bonds that result in a partial sharing of hydrogen atoms between reacting groups?
A
hydrogen bonds
4
Q
What are purines?
A
2 ring structures (A and G)
5
Q
What are pyrimidines?
A
1 ring structure (T and C)
6
Q
What is B-form DNA?
A
DNA that spirals to the right
7
Q
What is DNA that spirals to the right?
A
B-form DNA
8
Q
Define Z-form DNA?
A
helix spirals to the left and the backbone takes on a zigzag shape
9
Q
What type of DNA helix spirals to the left and the backbone takes on a zigzag shape?
A
Z-form DNA
