DISCOVERING THE STRUCTURE OF DNA Flashcards
1
Q
How is a strand of DNA made?
A
DNA is composed of repeating subunits called nucleotides.
2
Q
What do nucleotides consist of?
A
- A phosphate group
- Deoxyribose sugar
- A nitrogenous base
3
Q
What forms the backbone of a DNA strand?
A
Phosphate and (deoxy)ribose sugar
4
Q
The four types of nitrogenous base?
A
- Adenine
- Thymine
- Guanine
- Cytosine
5
Q
What is the base pairing rule?
A
Cytosine pairs with Guanine
Adenine pairs with Thymine
6
Q
What makes the rung of a DNA ladder?
A
The bases
7
Q
What type of strand molecule is DNA
A
DNA is a double stranded molecule, it takes form of a helix
