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Ch 12: Prentice Hall Biology Chapter 12: DNA and RNA

About This Chapter

The DNA and RNA chapter of this Prentice Hall Biology Textbook Companion Course helps students learn the essential biology lessons of DNA and RNA. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the DNA and RNA textbook chapter.

How it works:

  • Identify the lessons in Prentice Hall Biology's DNA and RNA chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the DNA and RNA topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, re-watch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • The chemical structures of nucleic acids and phosphodiester bonds
  • Adenine, guanine, cytosine and thymine base pairings
  • DNA's double helix structure
  • Conservative, semi-conservative and dispersive models of DNA replication
  • Differences between RNA and DNA
  • Types of RNA (mRNA, tRNA and rRNA)
  • How DNA polymerase and RNA primase initiate DNA replication
  • Transcription of mRNA from DNA
  • Translation of mRNA to protein
  • Effects of point mutations, insertions and deletions on DNA
  • Effects of missense, nonsense and silent mutations on protein function
  • Transcriptional repression and induction

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11 Lessons in Chapter 12: Prentice Hall Biology Chapter 12: DNA and RNA
Test your knowledge with a 30-question chapter practice test
DNA: Chemical Structure of Nucleic Acids & Phosphodiester Bonds

1. 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

2. 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.

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!

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.

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.

Transcription of Messenger RNA (mRNA) from DNA

7. 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.

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

8. 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.

What is a Point Mutation? - Definition, Causes & Types

9. What is a Point Mutation? - Definition, Causes & Types

What are genetic mutations? How do they affect our DNA? This lesson covers the basics of point mutations and provides simple examples of different mutation types.

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.

Regulation of Gene Expression: Transcriptional Repression and Induction

11. 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.

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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