2012 Quiz 3 Key - Biol241 2012 Quiz 3 (20 points) Name:_...

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

View Full Document Right Arrow Icon
Biol241 2012 Name:__________________________ Quiz 3 (20 points) Purdue ID:__________________________ 1 1) Regarding prokaryotic DNA polymerase I and III, which of the following statements is incorrect? a) Both DNA polymerase I and III have 3’-5’ exonuclease activity. b) DNA polymerase III is responsible for most of the strand elongation during DNA replication. c) Both DNA polymerase I and III have 5’-3’ exonuclease activity. d) Both DNA polymerase I and III add nucleotides to the 3’-end of growing chain. 2) A temperature-sensitive E. coli strain has been isolated. When grown at restrictive temperature, it was found that Okazaki fragments accumulated in the mutant cells. Based on this observation, this mutation likely disrupts: a) DNA polymerase I. b) dnaA. c) dnaB. d) Primase. 3) A different temperature-sensitive E. coli strain has been isolated. When grown at restrictive temperature, it was found that the initiation of DNA replication occurred normally, but strand elongation ceased after a short while. Based on this observation, this mutation
Background image of page 1

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

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

This note was uploaded on 03/12/2012 for the course BIO 241 taught by Professor Henrychang during the Spring '11 term at Purdue University-West Lafayette.

Page1 / 3

2012 Quiz 3 Key - Biol241 2012 Quiz 3 (20 points) Name:_...

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