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Ch 35: Praxis General Science: DNA Replication

About This Chapter

As you study for the Praxis General Science exam, be sure to review DNA replication. Throughout this chapter, the process of DNA replication will be explained in great detail.

Praxis General Science: DNA Replication - Chapter Summary

The educational lessons in this chapter will expound on the process of DNA replication, with attention given to the roles of different enzymes and their various activities. By reviewing this chapter, you will refresh your knowledge of information that may be found on the Praxis General Science test. In addition to explaining the process of DNA replication, these lessons will explain and describe the roles of the following:

  • Helicase
  • DNA polymerase and RNA primase
  • Enzymes and replication bubbles

These lessons, led by expert instructors, are available as videos and full transcripts. You may work through them at your own pace. After you complete a lesson, take the related quiz to determine how well you remember the information you just reviewed and to discover what you need to study further. The dashboard feature will keep track of your progress, and will help ensure you don't miss any important lessons or quizzes.

5 Lessons in Chapter 35: Praxis General Science: DNA Replication
Test your knowledge with a 30-question chapter practice test
What Is DNA Replication? - Conservative, Semi-Conservative & Dispersive Models

1. What Is DNA Replication? - Conservative, Semi-Conservative & Dispersive Models

How do we know that DNA replication is semi-conservative? How do we know it's not conservative or dispersive? Let's follow the famous experiment by Meselson and Stahl to find out!

How Helicase Unwinds the DNA Double Helix in Preparation for Replication

2. How Helicase Unwinds the DNA Double Helix in Preparation for Replication

How does semi-conservative replication begin? Discover how DNA helicase creates a replication fork to unwind the complicated DNA molecule and allow daughter strands to form on the parental template.

How DNA Polymerase and RNA Primase Initiate DNA Replication

3. How DNA Polymerase and RNA Primase Initiate DNA Replication

How do enzymes assist in starting DNA replication? In this lesson, we explore the work of a contributing enzyme, DNA polymerase, and learn how the RNA primer is made by the action of RNA primase.

DNA Replication: The Leading Strand and DNA Polymerase Activities

4. DNA Replication: The Leading Strand and DNA Polymerase Activities

How does replication occur in the antiparallel DNA molecule? In this lesson, explore the significance of the leading and lagging strands, and learn how Okazaki fragments and RNA ligase make DNA replication possible.

DNA Replication: Review of Enzymes, Replication Bubbles & Leading and Lagging Strands

5. DNA Replication: Review of Enzymes, Replication Bubbles & Leading and Lagging Strands

Feeling lost in the thorny details of DNA replication? This lesson provides an overview of semi-conservative replication, with a focus on putting together all of the concepts involved. We'll review the work of each enzyme on our way to completing the big picture of DNA replication.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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