14. DNA Synthesis

Leading & Lagging DNA Strands

14. DNA Synthesis

Leading & Lagging DNA Strands

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Leading & Lagging DNA Strands

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BioFlix: Synthesis of the Lagging Strand

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BioFlix: Synthesis of the Lagging Strand

BioFlix: Synthesis of the Leading Strand

Leading vs Lagging Strand

DNA Replication: Leading and Lagging Strand

Determining Leading vs Lagging Strands based off of 5' and 3' ends.

DNA Replication- Leading vs Lagging Strand

Chris Bertha

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Multiple Choice

Which is involved in replicating the lagging strand of DNA, but is not involved in leading strand replication?

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Multiple Choice

Which of the following statements correctly describes the difference between the leading and the lagging strands of DNA during DNA replication?

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Multiple Choice

The mechanisms of DNA synthesis differs between the two new daughter strands during replication. This is due to the fact that:

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Multiple Choice

Below is a close-up of the portion of a DNA replication bubble.

Helicase is shown as a yellow triangle currently moving from left to right. Based on what you know about the creation of new DNA during replication, which is the lagging strand and why?

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Multiple Choice

DNA polymerase adds nucleotides to the __________ of the leading strands and to the __________ of the lagging strands (Okazaki fragments).

After the formation of a replication bubble, which of the following is the correct sequence of enzymes used for the synthesis of the lagging DNA strand?

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Textbook Question

What is the basis for the difference in how the leading and lagging strands of DNA molecules are synthesized? a. The origins of replication occur only at the 5′ end. b. Helicases and single-strand binding proteins work at the 5′ end. c. DNA polymerase can join new nucleotides only to the 3′ end of a pre-existing strand, and the strands are antiparallel. d. DNA ligase works only in the 3′→5′ direction.

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Textbook Question

How are Okazaki fragments synthesized? a. by using the leading-strand template, and synthesizing 5'→3' b. by using the leading-strand template, and synthesizing 3'→5' c. by using the lagging-strand template, and synthesizing 5'→3' d. by using the lagging-strand template, and synthesizing

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Textbook Question

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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14. DNA Synthesis

Leading & Lagging DNA Strands

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