About This Chapter
Who's it for?
Anyone who needs help learning or mastering high school biology material will benefit from taking this course. There is no faster or easier way to learn biology. Among those who would benefit are:
- Students who have fallen behind in understanding DNA polymerase, RNA primase and DNA replication
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning science (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn about DNA replication
- Students who struggle to understand their teachers
- Students who attend schools without extra science learning resources
How it works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the DNA replication chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the DNA replication chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any DNA replication question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students will review:
This chapter helps students review the concepts in a DNA replication unit of a standard high school biology course. Topics covered include:
- Models of DNA replication
- Helicase and the double helix
- Roles of DNA polymerase and RNA primase
- Lagging and leading strands
- Enzymes and replication bubbles
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!
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.
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.
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.
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.
Earning College Credit
Did you know… We have over 79 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the High School Biology: Help and Review course
- Core Science Concepts: Help and Review
- Basic Science Lab Skills: Help and Review
- Inorganic Chemistry Review for High School Biology: Help and Review
- Basic Organic Chemistry: Help and Review
- How Enzymes Work: Help and Review
- Essentials of Cell Biology: Help and Review
- Requirements of Biological Systems: Help and Review
- Cell Communication: Help and Review
- Cell Metabolism: Help and Review
- Cell Division in Biology: Help and Review
- Nucleic Acids - DNA and RNA - in Biology: Help and Review
- Transcription and Translation of Nucleic Acids: Help and Review
- Genetics and Heredity in Biology: Help and Review
- Genetic Mutations in Biology: Help and Review
- DNA Technology and Genomics: Help and Review
- Bacterial Biology Essentials: Help and Review
- Viruses in Biology: Help and Review
- The Origin of the Universe and Life on Earth: Help and Review
- Geologic Time, Dating & Fossils: Help and Review
- Evolution Basics: Help and Review
- The Evolution & Classification of Organisms: Help and Review
- Basics of Plant Biology: Help and Review
- Plant Reproduction & Growth Cycles: Help and Review
- Introduction to Fungi: Help and Review
- Introduction to Invertebrates: Help and Review
- Introduction to Vertebrates: Help and Review
- Circulatory System & Other Systems: Help & Review
- The Nervous, Immune, and Endocrine Systems: Help and Review
- Animal Reproduction & Embryonic Development: Help and Review
- Human Reproductive Systems: Help and Review
- Ecology and the Environment: Help and Review
- Human Effects on the Environment: Help and Review
- Animal Behavior: Help and Review
- Laboratory Techniques for Molecular Biology & Genetic Engineering: Help and Review
- Analyzing Scientific Data in Biology: Help and Review