1 SEM CARDLESS ACC W/RAVEN TEXT
1 SEM CARDLESS ACC W/RAVEN TEXT
12th Edition
ISBN: 9781265321062
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 14, Problem 8A

When mutations that affected DNA replication were isolated, two kinds were found. In cultures that were not synchronized (that is, not all dividing at the same time), one class put an immediate halt to replication, whereas the other put a much slower stop to the process. The first class affects functions at the replication fork like polymerase and primase. The second class affects functions necessary for

a. elongation on the lagging but not the leading strand.

b. elongation on the leading but not the lagging strand.

c. initiation: cells complete replication but cannot start a new round.

d. the sliding clamp: loss makes the polymerase slower.

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Which of the following statements is TRUE concerning the synthesis of the leading and lagging strands of DNA in prokaryotic cells? a. O b. The leading strand is synthesized by one polymerase III continuously, and the lagging strand is synthesized by several molecules of DNA polymerase III. d. The leading and lagging strands are synthesized at the same time by the one DNA polymerase I. O c. The leading and lagging strands are synthesized at the same time by the one DNA polymerase III. The leading strand is synthesized by one polymerase III, and the lagging strand is synthesized by DNA polymerase I.
Match the enzymes provided from (1-4) in the list of choices with their matching function (A-D) during DNA replication. A. Disrupts hydrogen bonds between DNA bases B. Can only add nucleotides to an existing 3 OH end C. Can't add nucleotides to a chain, but can make covalent bonds D. Actually a specialized form of RNA polymerase select 1. DNA polymerase select 2. Primase select 3. Ligase select v 4. Helicase
Which of the following is NOT TRUE about replication? A. Polynucleotides are made up of deoxynucleotide monophosphates but the substrates are deoxynucleotide triphosphates B. The mechanism of the reaction is nucleophilic addition C. In the formation of primers, nucleotides are added in any direction D. Both nucleotide triphosphates and deoxynucleotide triphosphates are substrates in replication E. Direction of synthesis is 5'23' and lengthens unidirectionally relative to the double strand.

Chapter 14 Solutions

1 SEM CARDLESS ACC W/RAVEN TEXT

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