Lecture 15 Flashcards
1
Q
DNA replicate in both directions until the entire molecule is copied
A
true
2
Q
What is the Y shaped region where new DNA strands are elongating?
A
replication fork
3
Q
What is the enzyme that untwist double helix at replication fork?
A
helicase
4
Q
Which enzyme corrects the overwinding ahead the replication forks…
A
Topoisomerase
5
Q
Which enzyme synthesizes RNA primers using parental DNA?
A
primase
6
Q
How many nucleotides are present in primase?
A
5 to 10
7
Q
Which enzyme catalyze elongation of new DNA ?
A
DNA polymerase
8
Q
Which enzyme join the okazaki fragment?
A
DNA ligase
9
Q
What do DNA polymerase also do?
A
replace incorrectt nucleotides
10
Q
What is the special nucleotide sequences at the end of the DNA?
A
telomeres
11
Q
Which enzyme catalyzes telomeres?
A
telomerase
