Ch 1: Biological Molecules

About This Chapter

Watch the videos included in this lesson on biological molecules on your tablet, computer or smartphone for convenient study any time. This engaging chapter was designed by expert instructors to help you understand these concepts quickly and easily.

Biological Molecules - Chapter Summary

In this chapter, you'll review biological molecules in a series of short video lessons. Just a few of the subjects presented here include the structure and function of lipids, organic molecues and nucleotides. These videos are self-paced and easy to navigate using the video tabs feature, which offers you total freedom and flexibility as you study. To make helpful offline study guides, simply print out the lesson transcript included with each video to study key concepts and terms. Once you finish this chapter, you should be able to:

  • Explain functional groups in organic molecules
  • Discuss the purpose of monomers and polymers
  • Outline the structure and function of carbohydrates and lipids
  • Detail proteins, along with their structure
  • Describe the amino acids, peptide bonds and polymerization in proteins
  • Give the structure and characteristics of the 20 amino acids
  • Differentiate between the primary, secondary, tertiary and quaternary structure of proteins
  • Identify the structure and components of nucleotides

11 Lessons in Chapter 1: Biological Molecules
Test your knowledge with a 30-question chapter practice test
Introduction to Organic Molecules I: Functional Groups

1. Introduction to Organic Molecules I: Functional Groups

If you've ever wondered what gives vinegar that sour flavor, you may not realize that you have contemplated functional groups. View this lesson for an introduction to organic chemistry, functional groups and how they are part of your daily life.

Introduction to Organic Molecules II: Monomers and Polymers

2. Introduction to Organic Molecules II: Monomers and Polymers

From everyday man-made items like milk jugs and styrofoam to natural proteins and plant materials, the world is full of polymers! Check out this lesson to learn how polymers are constructed on a molecular level.

Structure and Function of Carbohydrates

3. Structure and Function of Carbohydrates

Carbohydrates are found in many foods that we eat and may be found as sugars, starches, or fiber. Learn more about these three distinct types of carbohydrates, and how they are distinguished through their chemical structures in this lesson.

Structure and Function of Lipids

4. Structure and Function of Lipids

Molecules called lipids have long hydrocarbon chains that determine the way they act. They can be fats, oils, or hormones, and even exist in our cell membranes. Learn more about the chemical structure and biological function of various lipids in this lesson.

Proteins I: Structure and Function

5. Proteins I: Structure and Function

We need our proteins, not just as a major food group but for the many useful roles that they play in our bodies. In our introductory lesson to proteins, you'll learn about the many functions we rely on them to perform.

Proteins II: Amino Acids, Polymerization and Peptide Bonds

6. Proteins II: Amino Acids, Polymerization and Peptide Bonds

In this lesson, we'll take a deeper look at amino acids. You'll learn what makes a peptide, and what separates a protein from other kinds of amino acid bonds.

Proteins III: Structure and Characteristics of the 20 Amino Acids

7. Proteins III: Structure and Characteristics of the 20 Amino Acids

How do amino acids form the intricate polypeptide chains found in proteins? It's a matter of chemistry. Join glycine, a special amino acid, as she sizes up the other amino acids.

Proteins IV: Primary, Secondary, Tertiary and Quaternary Structure

8. Proteins IV: Primary, Secondary, Tertiary and Quaternary Structure

How is progressing through higher order protein structures like crafting an essay? In this lesson, you'll explore everything from quaternary structures to denaturation as we show how the different structures are intertwined.

Factors Affecting Protein Structure

9. Factors Affecting Protein Structure

In this lesson, learn the basics of protein structure and four factors that contribute to protein structure. Also, learn how this structure can be denatured and what that does to the protein.

Globular Proteins: Definition, Structure & Examples

10. Globular Proteins: Definition, Structure & Examples

Explore what makes globular proteins different from other groups of proteins. Learn about the definition and structure of globular proteins as well as some examples and their functions.

Nucleotides: Structure & Components

11. 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.
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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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