The DNA Double Helix

Question 1

Where are the hydrophobic bases and hydrophilic sugar backbone situated via the helix

Answer 1

Sugar: outside the helix, faces water
Bases: inside, perpendicular to the helix axis

Question 2

How many base pairs does each turn of the helix contain

Answer 2

~10

Question 3

What quality of the DNA strands allows for the reproduction of cells and the repair of damaged DNA

Answer 3

Self complimentary strands

Question 4

How many hydrogen bonds hold C and G

Answer 4

3

Question 5

How many hydrogen bonds between A and T

Answer 5

2

Question 6

Why does the DNA need a major and a minor grove

Answer 6

It enables specific interactions with protons.

Question 7

What is the hydrophobic effect

Answer 7

The bases hide in the core and the sugar phosphate backbone interacts with water

Question 8

What is the central dogma

Answer 8

DNA (replication) —-transcripition—> RNA —–translation—> proteins

Question 9

A=T and C=G is known as

Answer 9

Chargaffs rule