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Ch 53: ILTS Biology: DNA Replication

About This Chapter

Use these lessons to refresh your knowledge of how DNA replication works and the structures that make it possible as you prepare for the ILTS Biology exam. These video lessons will help you answer exam questions on these topics.

ILTS Biology: DNA Replication - Chapter Summary

The lessons in this chapter provide an opportunity to review facts about the process of DNA replication, which is one of the concepts covered by the ILTS Biology test. Topics these video lessons cover include:

  • Models of DNA replication
  • DNA double helix
  • The roles of DNA polymerase and RNA primase
  • The leading strand
  • Enzymes and replication bubbles

These lessons are brief, averaging about five minutes long, and you can watch them as your schedule permits even when you're on the go. Lesson quizzes and a chapter exam allow you to test your knowledge. If you need to review a specific part of the lesson, video tags make it quick work to jump back to just that part.

ILTS Biology: DNA Replication Chapter Objectives

The ILTS Biology test assesses your understanding of basic biology concepts and is one of Illinois' requirements for becoming a certified biology teacher. All questions on the exam, like the questions on our lesson quizzes, are multiple-choice. The exam's questions are divided into six subareas, and questions on the topics covered in this DNA Replication chapter are part of the cell biology, heredity and evolution subarea.

5 Lessons in Chapter 53: ILTS Biology: 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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Other Chapters

Other chapters within the ILTS Science - Biology (105): Practice and Study Guide course

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