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Ch 14: TExES Life Science: DNA Replication

About This Chapter

As you prepare for the TExES Life Science exam, use this chapter to review the structures and stages involved in DNA replication. You'll find engaging video lessons, practice quizzes and more in this chapter.

TExES Life Science: DNA Replication - Chapter Summary

This chapter includes a series of engaging lesson videos about the structures and stages of DNA replication, intended to prepare you for related questions on the TExES Life Science test. These videos are taught by expert instructors who are available to answer any questions you may have so that you can improve your understanding of:

  • Conservative, semi-conservative and dispersive models of DNA replication
  • Helicase and the unwinding of the DNA double helix
  • DNA polymerase and RNA primase
  • DNA polymerase and leading strands
  • Enzymes, replication bubbles, leading strands and lagging strands

Test your understanding of the material by taking lesson quizzes. You can reexamine anything in the videos with ease by using the Timeline feature or the video tags.

5 Lessons in Chapter 14: TExES Life 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.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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