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Ch 10: Holt McDougal Modern Biology Chapter 10: DNA, RNA, and Protein Synthesis

About This Chapter

The DNA, RNA, and Protein Synthesis chapter of this Holt McDougal Modern Biology textbook companion course helps students learn essential modern biology lessons on DNA, RNA, and protein synthesis. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the DNA, RNA, and Protein Synthesis textbook chapter.

How it works:

  • Identify the lessons in the Holt McDougal Modern Biology DNA, RNA, and Protein Synthesis chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the DNA, RNA, and protein synthesis topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Double helix structure of DNA
  • Chemical structure of nucleic acids
  • Complementary base pairing in DNA
  • DNA replication
  • The function of helicase
  • Functions of DNA polymerase and RNA primase
  • Role of the leading strand in DNA replication
  • Protein synthesis in cells
  • Transcription of mRNA from DNA
  • Translation of RNA into amino acids
  • Codon recognition
  • Role of peptide bonds and ribosomes in genetic translation
  • Translation of mRNA into protein

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15 Lessons in Chapter 10: Holt McDougal Modern Biology Chapter 10: DNA, RNA, and Protein Synthesis
Test your knowledge with a 30-question chapter practice test
DNA: Discovery, Facts, Structure & Function in Heredity

1. DNA: Discovery, Facts, Structure & Function in Heredity

This lesson will help you to navigate the twists and turns of DNA's structure. We'll also clue you in on the amazing discoveries that put this nucleic acid in the limelight as the molecule of heredity.

DNA: Chemical Structure of Nucleic Acids & Phosphodiester Bonds

2. DNA: Chemical Structure of Nucleic Acids & Phosphodiester Bonds

In this lesson, you'll discover what nucleotides look like and how they come together to form polynucleotides. We'll also explore nucleic acids and focus on DNA in particular.

DNA: Adenine, Guanine, Cytosine, Thymine & Complementary Base Pairing

3. DNA: Adenine, Guanine, Cytosine, Thymine & Complementary Base Pairing

Learn the language of nucleotides as we look at the nitrogenous bases adenine, guanine, cytosine and thymine. Armed with this knowledge, you'll also see why DNA strands must run in opposite directions.

What Is DNA Replication? - Conservative, Semi-Conservative & Dispersive Models

4. 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

5. 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

6. 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

7. 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

8. 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.

Protein Synthesis in the Cell and the Central Dogma

9. Protein Synthesis in the Cell and the Central Dogma

Learn the story of the central dogma and how it relates to protein synthesis. We'll use a simple analogy to explore the roles of transcription and translation in building protein from the DNA code. In this lesson, we'll also introduce the concept of a gene.

Transcription of Messenger RNA (mRNA) from DNA

10. Transcription of Messenger RNA (mRNA) from DNA

In this lesson, you will gain a thorough understanding of how transcription works. We will investigate how DNA is transcribed into RNA with the help of a promoter and RNA polymerase. Learn the purpose of messenger RNA and explore the three phases of transcription.

What Is the Genetic Code That Translates RNA Into Amino Acids?

11. What Is the Genetic Code That Translates RNA Into Amino Acids?

How is RNA translated into a series of amino acids? Learn the language of the genetic code, explore a codon dictionary, and discover some basics of genetics in this lesson on translation.

Making Sense of the Genetic Code: Codon Recognition

12. Making Sense of the Genetic Code: Codon Recognition

Explore the genetic code and how it is translated into a polypeptide. We'll practice using the RNA codon chart and learn the basics of codon recognition.

Codon Recognition: How tRNA and Anticodons Interpret the Genetic Code

13. Codon Recognition: How tRNA and Anticodons Interpret the Genetic Code

How does codon recognition work at the molecular level? Can you use tRNA and anticodons to decipher the genetic code? Learn the mechanics of codon recognition and build a polypeptide from a sample genetic code.

The Role of Ribosomes and Peptide Bonds in Genetic Translation

14. The Role of Ribosomes and Peptide Bonds in Genetic Translation

Ribosomes play a major role in the process of genetic translation. In this lesson, learn about the structure of ribosomes and how peptide bonds help to create chains of amino acids.

Translation of mRNA to Protein: Initiation, Elongation & Termination Steps

15. Translation of mRNA to Protein: Initiation, Elongation & Termination Steps

Translation, the second part of the central dogma of molecular biology, describes how the genetic code is used to make amino acid chains. In this lesson, explore the mechanics involved in polypeptide synthesis. Learn the three major steps of translation as you watch tRNA, mRNA, and ribosomes go to work.

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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