Activity+5+answers

Activity+5+answers - 3. What direction does DNA polymerase...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Week 5 Activity Sheet BIS 2A 1. Describe three ways in which DNA errors are repaired. Proofreading – DNA polymerase recognizes errors and replaces them. Mismatch Repair – Proteins survey the DNA immediately after replication and  correct mistakes. Excision Repair – Enzymes continually examine DNA and remove damaged bases. 2. How does DNA replication begin? Helicases unwinds a DNA molecule, RNA primer then binds to origin sites  creating a replication fork with a leading strand and a lagging strand.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 3. What direction does DNA polymerase add new bases to a strand of DNA? 5 3 4. Define antiparallel as it relates to DNA. The direction of the DNA runs 5 to 3 in one strand and the opposite in the other. 5. Explain what it means for DNA replication to be semiconservative. Daughter DNA molecules each contain one old strand and one new one....
View Full Document

This note was uploaded on 04/15/2010 for the course ECM 995678 taught by Professor Derkins during the Spring '10 term at Concord.

Page1 / 2

Activity+5+answers - 3. What direction does DNA polymerase...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online