Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 4TYU
The elongation of the leading strand during DNA synthesis
- A. progresses away from the replication fork.
- B. occurs in the 3’ → 5’ direction.
- C. produces Okazaki fragments.
- D. depends on the action of DNA polymerase.
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During DNA replication, the leading strand is synthesized continuously, while the lagging strand is synthesized as Okazaki fragments. This is because:
O A. DNA polymerases can bind to only one strand at a time.
O B. Two different DNA polymerases are involved in replication (DNA polymerase I and II).
O C. DNA synthesis can take place only in the 5 -> 3 direction.
D. The primers are made of RNA.
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For the statements below, indicate whether the statement applies to the leading strand, or to the lagging strand, or to both.
a. synthesized in the 5'→3' direction
b. synthesized continuously
c. require(s) DNA ligase to join fragments
d. described as a daughter strand
e. synthesized in the same direction as the movement of the replication fork
f. DNA polymerase is the enzyme involved in forming this polynucleotide.
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
Chapter 13 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 13.1 - Given a polynucleotide sequence such as GAATTC,...Ch. 13.1 - Prob. 2CCCh. 13.2 - What role does base pairing play in the...Ch. 13.2 - Make a table listing the functions of seven...Ch. 13.2 - MAKE CONNECTIONS What is the relationship between...Ch. 13.3 - Describe the structure of a nucleosome, the basic...Ch. 13.3 - What two properties, one structural and one...Ch. 13.4 - Prob. 1CCCh. 13.4 - DRAW IT One strand of a DNA molecule has the...Ch. 13.4 - Describe the role of complementary base pairing...
Ch. 13 - In his work with pneumonia-causing bacteria and...Ch. 13 - What is the basis for the difference in how the...Ch. 13 - In analyzing the number of different bases in a...Ch. 13 - The elongation of the leading strand during DNA...Ch. 13 - Prob. 5TYUCh. 13 - Prob. 6TYUCh. 13 - Prob. 7TYUCh. 13 - Prob. 8TYUCh. 13 - Prob. 9TYUCh. 13 - MAKE CONNECTIONS Although the proteins that cause...Ch. 13 - Prob. 12TYUCh. 13 - FOCUS ON EVOLUTION Some bacteria may be able to...Ch. 13 - FOCUS ON ORGANIZATION The continuity of life is...
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