About This Chapter
Basics of DNA & RNA - Chapter Summary
This chapter provides overviews of DNA and RNA structures and the role each plays in molecular biology. You'll study general terms relating to nucleic acids and compare DNA and RNA. These brief lessons contain illustrations and examples that enhance your learning experience. After you have completed your review of this chapter, you should be able to do the following:
- Detail the chemical structure of nucleic acids, particularly DNA
- Identify the four nitrogenous bases of DNA
- Detail the double helix structure of DNA
- Explain the differences between DNA and RNA
- List the types of RNA
- Provide details about the role and function of tRNA
This complex material is broken down into simple language and illustrations by our experienced instructors to ensure your understanding of these topics. Lessons are accessible 24/7 on any device, making it easy for you to study at your convenience. Measure the depth of your knowledge with self-assessment quizzes, and monitor your progress through this chapter on your Dashboard.
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.
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.
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.
4. 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.
5. tRNA: Role, Function & Synthesis
This lesson focuses on transfer RNA (tRNA). It covers what tRNA is, what it does in our cells, and how it is made. It also gives a brief description of the history and discovery of tRNA.
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