Ch 24: Nucleic Acids - DNA and RNA for the MCAT: Help and Review

About This Chapter

The Nucleic Acids: DNA and RNA chapter of this Medical College Admission Test (MCAT) Help and Review course is the simplest way to master DNA and RNA structures. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of nucleic acids.

Who's it for?

Anyone who needs help preparing for the science section of the MCAT exam will benefit from taking this course. You will be able to grasp the subject matter faster, retain critical knowledge longer and earn better grades. You're in the right place if you:

  • Have fallen behind in understanding the chemical structure of nucleic acids or the differences between RNA and DNA.
  • Need an efficient way to learn about nucleic acids.
  • Learn best with engaging auditory and visual tools.
  • Struggle with learning disabilities or learning differences, including autism and ADHD.
  • Experience difficulty understanding your teachers.
  • Missed class time and need to catch up.
  • Can't access extra MCAT science preparation resources at school.

How it works:

  • Start at the beginning, or identify the topics that you need help with.
  • Watch and learn from fun videos, reviewing as needed.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Submit questions to one of our instructors for personalized support if you need extra help.
  • Verify you're ready by completing the Nucleic Acids: DNA and RNA chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Nucleic Acids: DNA and RNA chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any relevant question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

In this chapter, you'll learn the answers to questions including:

  • What chemical structures are found in nucleic acids?
  • How are phosphodiester bonds organized?
  • How do adenine, cytosine, guanine and thymine form complementary base pairings?
  • What are the different kinds of RNA, and how do they compare to DNA?
  • How does the double helix structure represent the hereditary DNA molecule?

7 Lessons in Chapter 24: Nucleic Acids - DNA and RNA for the MCAT: Help and Review
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.

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

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.

Chromatid: Definition & Exchange

5. Chromatid: Definition & Exchange

Chromatids are the copies of chromosomes that are made before mitosis and meiosis. In this lesson, learn how to tell sister chromatids apart from homologous chromosomes, and find out how DNA exchange between chromatids increases genetic diversity.

Nucleotide: Structure, Bonding & Mutations

6. Nucleotide: Structure, Bonding & Mutations

Nucleotides are the building blocks of DNA and RNA. In this lesson, you will learn about the different types of nucleotides, their structure, and how the change in a single nucleotide can affect the survival of an organism.

Nucleotides: Structure & Components

7. Nucleotides: Structure & Components

Nucleotides have a sugar, phosphate, and nitrogenous base. Learn how these simple components allow nucleotides to join together to make polymers like DNA and RNA, as well as energy carrying molecules like ATP.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

Other chapters within the MCAT Prep: Help and Review course