Introductory Chemistry (5th Edition)

Published by Pearson
ISBN 10: 032191029X
ISBN 13: 978-0-32191-029-5

Chapter 19 - Biochemistry - Exercises - Questions - Page 729: 42

Answer

DNA replication occurs in a number of steps. An enzyme called helicase unwinds the parental strands of DNA's double helix structure. DNA polymerase binds to both strands, using them as templates to add on daughter strands. Nucleotides are then added to fit their complimentary bases. DNA polymerase can only move in the 3' to 5' direction, and each parent strand ends up with a complimentary daughter strand.

Work Step by Step

DNA replication occurs in a number of steps. An enzyme called helicase unwinds the parental strands of DNA's double helix structure. DNA polymerase binds to both strands, using them as templates to add on daughter strands. Nucleotides are then added to fit their complimentary bases. DNA polymerase can only move in the 3' to 5' direction, and each parent strand ends up with a complimentary daughter strand.
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