12/13 Flashcards
What are nucleotides made of?
Phosphate, sugar, base
What are the three roles of DNA?
Storing information
Transmitting information
Copying information
What are the four bases and how do they pair up?
Adenine, thymine, guanine, cytosine
A with t and g with c
What shape is DNA?
Double helix
What does Chargaff’s rule explain?
Base pairing
What do hydrogen bonds do?
Connects bases
What’s replication?
The copying or duplication of DNA?
How does replication occur in prokaryotes?
Starts at one point, proceeds in two directions
How does replication occur in eukaryotes?
Begins at hundreds or dozens points, then proceeds in two directions
What did Rosalind Frank discover?
Spiral shape of DNA using X-rays
What did Watson and Crick discover?
Double helix shape
What does RNA stand for
Ribonucleic acid