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Ch 32: DNA Replication - ORELA Middle Grades General Science

About This Chapter

This comprehensive overview of DNA replication can enhance your preparations for the ORELA Middle Grades General Science assessment. Benefit from expert instruction in a fun video format to boost your knowledge of the subject area.

DNA Replication: ORELA Middle Grades General Science - Chapter Summary

The lessons in this chapter provide you with an in-depth look at DNA replication that can make answering related questions on the ORELA Middle Grades General Science assessment easier. Upon completion of this chapter, you will be able to:

  • Define the conservative, semi-conservative and dispersive models of DNA replication
  • Explain how helicase unwinds the DNA double helix in preparation for replication
  • Discuss how DNA polymerase and RNA primase initiate DNA replication
  • Provide insight into the leading strand and DNA polymerase activities
  • Analyze enzymes, replication bubbles and leading and lagging strands

Instructors in the video lessons ensure your studying process is comprehensive by providing the definitions and examples you need to understand DNA replication. Watch the lessons often and in any order until you've absorbed the information.

DNA Replication: ORELA Middle Grades General Science Objectives

In Oregon, educators take the ORELA Middle Grades General Science assessment to secure the licensure that enables them to teach science in the middle grades classroom. Explore topics in this chapter to prepare for questions in the life science content domain of the exam which constitutes approximately 25% of the total test.

All of the questions on the assessment are multiple-choice and taken on a computer. Use the lesson quizzes in this chapter to access questions similar in format and content to those you'll see on the exam. You can also take a practice exam to reinforce concepts learned in this chapter. These resources help you get closer to earning a minimum passing score of 228 on the assessment.

5 Lessons in Chapter 32: DNA Replication - ORELA Middle Grades General Science
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 ORELA Middle Grades General Science: Practice & Study Guide course

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