answer to: matching: Lagging strand ______ DNA helicase _____ Leading strand ___

Question

answer to: matching:

Lagging strand ______

DNA helicase _____

Leading strand _____

DNA Primase _____

DNA ligase _____

Okazaki fragments _____

DNA polymerase III _____

DNA polymerase I _____

Telomerase _____

DNA gyrase_____

Origin of replication_________

(A) Joins Okazaki fragments by sealing breaks in the sugar-phosphate backbone of newly synthesized DNA

(B) DNA strand that is replicated discontinuously.

(C) Enzyme that synthesizes a short stretch of RNA on a DNA template; during replication, it functions to provide a 3’-OH group for the attachment of a DNA nucleotide.

(D) Short lengths of DNA produced by discontinuous replication of the lagging strand.

(E) DNA strand that is replicated continuously.

(F) Ribonucleotide enzyme that replicates the ends of eukaryotic chromosomes.

(G) Enzyme in E. coli that relieves the torsional strain that builds up ahead of the replication fork.

(H) Bacterial DNA polymerase that removes RNA primers and replaces them with DNA.

(I) Bacterial DNA polymerase that elongates a new nucleotide strand from the 3’-OH group provided by the primer

(J) Unwinds DNA at replication fork.

(K) Site where DNA synthesis is initiated.

Explanation / Answer

1. Lagging strand - B

2. DNA helicase - J

3. Leading strand - E

4. DNA primase - C

5. DNA ligase - A

6. Okazaki fragments - D

7. DNA polymerase III - H

8. DNA polymerase I - I

9. Telomerase - F

10. DNA gyrase - G

11. Origin of replication - K

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