Ch 8: Holt McDougal Biology Chapter 8: From DNA to Proteins

About This Chapter

The From DNA to Proteins chapter of this Holt McDougal Biology Companion Course helps students learn the essential lessons associated with DNA and its relationship to proteins. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the From DNA to Proteins textbook chapter.

How It Works:

  • Identify the lessons in the Holt McDougal From DNA to Proteins chapter with which you need help.
  • Find the corresponding video lessons with this companion course chapter.
  • Watch fun videos that cover the topics on DNA's relationship with proteins 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:

  • How to make a scientific experiment
  • DNA structure and replication
  • The role of messenger RNA
  • The process of transcription
  • How RNA gets translated into amino acids
  • Different kinds of mutations
  • The definition for mutagens

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12 Lessons in Chapter 8: Holt McDougal Biology Chapter 8: From DNA to Proteins
Test your knowledge with a 30-question chapter practice test
Design a Scientific Experiment: Example of Avery and Griffith's Experiment

1. Design a Scientific Experiment: Example of Avery and Griffith's Experiment

What are the requirements of a scientific experiment? How do scientists design their investigations? In this lesson, we'll use the work of Avery and Griffith to explore the process of experimental design.

The Hershey-Chase Experiment

2. The Hershey-Chase Experiment

In this lesson we will discuss the Hershey-Chase experiment, a simple but powerful experiment that helped prove that DNA was genetic material. Hershey and Chase used a phage, or a virus that infects bacteria, and E. coli to answer their question.

DNA: Discovery, Facts, Structure & Function in Heredity

3. 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.

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!

Transcription of Messenger RNA (mRNA) from DNA

5. 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?

6. 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.

Regulation of Gene Expression: Transcriptional Repression and Induction

7. Regulation of Gene Expression: Transcriptional Repression and Induction

Do our genes work the same way all the time? How do we regulate the expression of our genes? Explore the various ways organisms control gene transcription through repression and induction of operons.

How An Operon Controls Transcription in a Prokaryotic Cell

8. How An Operon Controls Transcription in a Prokaryotic Cell

Is gene regulation really as simple as flipping a switch? What are the parts of an operon, and how do they function to control gene transcription? We'll study the lac operon to answer these questions.

RNA Processing in a Eukaryotic Cell: Splicing of Introns & Exons

9. RNA Processing in a Eukaryotic Cell: Splicing of Introns & Exons

In this lesson, we'll explore the unique considerations for gene regulation in the eukaryotic cell. We'll walk through RNA splicing of introns and exons and the addition of the 5' cap and poly(A) tail.

Effects of Mutations on Protein Function: Missense, Nonsense, and Silent Mutations

10. Effects of Mutations on Protein Function: Missense, Nonsense, and Silent Mutations

How does a tiny point mutation change the way a protein works? What are the consequences of base substitutions? In this lesson, we'll use an imaginary creature to explore missense, nonsense and silent mutations.

Effects of Frameshift Mutations: Definitions and Examples

11. Effects of Frameshift Mutations: Definitions and Examples

What is a frameshift in genetic translation? How can a frameshift mutation change a protein? In this lesson, learn about the codon reading frame and how frameshift mutations cause serious problems for polypeptide formation.

Mutagens: How the Environment Affects Mutation Rates

12. Mutagens: How the Environment Affects Mutation Rates

What causes mutations to occur in living things? How do we avoid mutations? Are mutations always bad? Discover answers to these questions and more in this lesson on mutagens.

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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