4.2 Study Guide Flashcards
How are the 3’ and 5’ Carbons oriented in the stands of DNA
The 3’ carbon ends are indicated because they point outward of the molecule.
Why do you think multiple replication bubbles form during the process of DNA replication?
Otherwise, it would take way too long to complete.
What does the helicase appear to be doing?
unzipping the DNA
What type of bonds do helicase enzymes break?
Hydrogen
Why do they break these bonds?
Hydrogen bonds are weak
Why can’t the other strand be built at the same time as the leading strand?
They run antiparallel to each other
How can you tell which is the leading strand and which is a lagging strand
The leading strand is a sold line on the 3’ line and is going into the replication bubble, while the lagging strand is broken into pieces on the 5’ line and is also going away from the replication bubble.
On the lagging strand, DNA polymerase is moving away from the replication fork meaning the copying is ______?
Discontinuous
On the leading strand, DNA polymerase is moving towards the replication fork so it can copy ____?
Continuously
What is the difference between the functions of DNA P I and DNA P III?
DNA P III is the main DNA builder and DNA P I is the editor and repairer.
