Ch 12: Introduction to Molecular Biology

About This Chapter

Find out more about carbohydrates, lipids and proteins by completing the lessons in this chapter on molecular biology. This material will serve you well as a way to improve your class grades, get ready for an exam, or satisfy your own curiosity.

Introduction to Molecular Biology - Chapter Summary

The lessons in this chapter walk you through the basics of molecular biology by introducing you to the composition and functions of carbohydrate, protein and lipid molecules. Find out how each is structured and what it does. You can also learn about amino acids, peptide bonds and more.

Brightly written, engagingly presented content makes working through these lessons a pleasure. The short duration ensures rapid progression through the chapter, so that you can gain the maximum benefit with a minimal investment of your time. Take the lesson quizzes and chapter test to check your mastery and retention, and use the Dashboard to stay on track. Use these lessons to learn about the following:

  • Carbohydrates: what they are and what they do
  • Functions and composition of lipids
  • Composition and functions of proteins
  • Overview of amino acids, peptide bonds and polymerization in proteins
  • Characteristics and composition of the 20 amino acids

5 Lessons in Chapter 12: Introduction to Molecular Biology
Test your knowledge with a 30-question chapter practice test
Structure and Function of Carbohydrates

1. 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

2. 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

3. 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

4. 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

5. 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.

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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