Lecture 15 Flashcards Preview

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Flashcards in Lecture 15 Deck (11):
1

DNA replicate in both directions until the entire molecule is copied

true

2

What is the Y shaped region where new DNA strands are elongating?

replication fork

3

What is the enzyme that untwist double helix at replication fork?

helicase

4

Which enzyme corrects the overwinding ahead the replication forks...

Topoisomerase

5

Which enzyme synthesizes RNA primers using parental DNA?

primase

6

How many nucleotides are present in primase?

5 to 10

7

Which enzyme catalyze elongation of new DNA ?

DNA polymerase

8

Which enzyme join the okazaki fragment?

DNA ligase

9

What do DNA polymerase also do?

replace incorrectt nucleotides

10

What is the special nucleotide sequences at the end of the DNA?

telomeres

11

Which enzyme catalyzes telomeres?

telomerase