Ch 11: DNA Replication & Protein Synthesis

About This Chapter

Use the flexible lessons in this chapter to understand more about how DNA replicates and changes itself. As you prepare for a certification or placement exam, study our text and video lessons to review the more difficult topics and then test yourself with our multiple-choice quizzes.

DNA Replication & Protein Synthesis - Chapter Summary

This interesting chapter presents the concept of DNA replication, the rates of replication and how DNA can even proofread itself. Other lessons address what happens to populations when DNA errors, known as mutations, come about in the copying process and the effects they can have. You also learn about how tRNA and mRNA work as vital components in the protein synthesis process. Once your review of this chapter is complete, you will be ready to do the following:

  • Explain how DNA replicates
  • Describe the formation and importance of polypeptides
  • Explain how irradiation causes mutation and DNA damage
  • Differentiate between RNA and DNA
  • Detail the role played by polypeptide chains in proteins

Our materials work like a mobile-friendly study guide you can take with you anywhere on your tablet or mobile device. Chapter tests and lesson quizzes help you identify the areas that could use more studying ahead of a test or assignment. Contact an instructor at any time as you move through the lessons if you have questions.

8 Lessons in Chapter 11: DNA Replication & Protein Synthesis
Test your knowledge with a 30-question chapter practice test
How Does DNA Replicate?

1. How Does DNA Replicate?

In this lesson, we will learn why DNA replicates as well as how. We'll also learn about the rates of replication and how DNA proofreads itself. After watching the lesson, you can complete a short quiz to test your knowledge.

Polypeptide: Definition, Formation & Structure

2. Polypeptide: Definition, Formation & Structure

Polypeptides are chains of amino acids and essential portions of proteins in cells. In this video, learn how polypeptides are formed and what's unique to their structure.

Mutations: When DNA Is Copied Wrong

3. Mutations: When DNA Is Copied Wrong

In this lesson, we will learn how mutations, or errors in DNA, come about, what kinds of effects they may have, and how they can impact populations as a whole.

Causes of Mutation and DNA Damage- Irradiation

4. Causes of Mutation and DNA Damage- Irradiation

By now, you know what mutations are and what effects they can cause, but how do mutations happen? In this lesson, learn about one important cause of mutations, irradiation.

Differences Between RNA and DNA & Types of RNA (mRNA, tRNA & rRNA)

5. Differences Between RNA and DNA & Types of RNA (mRNA, tRNA & rRNA)

In this lesson, you'll explore RNA structure and learn the central dogma of molecular biology. Along the way, you'll meet the three types of RNA and see how the cell uses them most effectively.

Role of mRNA in Protein Synthesis

6. Role of mRNA in Protein Synthesis

How does the message hidden within our DNA actually become something? This lesson discusses the vital role mRNA plays in protein synthesis. It helps explain how DNA is used within a living organism.

Role of tRNA in Protein Synthesis

7. Role of tRNA in Protein Synthesis

This lesson takes a look at tRNA and its role in protein synthesis. It also includes some background on the process of protein synthesis itself and tRNA's interactions with other nucleic acids and enzymes.

Polypeptide Chain: Definition, Structure & Synthesis

8. Polypeptide Chain: Definition, Structure & Synthesis

Proteins play important roles within our cells. Each protein is made up of at least one polypeptide chain. This lesson discusses the synthesis of polypeptide chains and emphasizes the relationship between its structure and function.

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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