Ch 4: Biomolecules & Enzymes

About This Chapter

Watch these videos to learn about biomolecules and enzymes, including topics like the structure of proteins, different types of carbohydrates, polymerization, and various enzyme functions. These brief lessons are great for individuals preparing for an exam.

Biomolecules & Enzymes - Chapter Summary

In these lessons, you'll improve your understanding of biomolecules and enzymes. Topics covered include carbohydrates, peptide bonds, nucleic acids, and enzymatic reactions. You'll also review primary, secondary, tertiary, and quaternary protein structures. After completing the chapter, you should be able to do the following:

  • Discuss the structure of three different types of carbohydrates
  • Describe the function of protein
  • Assess how protein is different from other kinds of amino acid bonds
  • List characteristics of numerous amino acids
  • Explain how different protein structures are intertwined
  • Detail the structure of lipids and nucleic acids
  • Examine the functions of enzymes, including important cellular processes
  • Discuss the functions of enzyme activators and inhibitors

Our professional educators review biomolecules and enzymes using plenty of examples to ensure the material is easy to absorb. Video timelines let you navigate the learning process and go over only the topics you need to review. A brief multiple-choice quiz is available for each lesson to test your knowledge. You can also print the lesson quizzes and use them as worksheets.

9 Lessons in Chapter 4: Biomolecules & Enzymes
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.

Proteins I: Structure and Function

2. 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

3. 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

4. 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

5. 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.

Structure and Function of Lipids

6. 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.

Nucleic Acids: Function & Structure

7. Nucleic Acids: Function & Structure

In this lesson, we will explore what nucleic acids are, including the oozing bodily fluid they were first found in, what makes them unique from other types of biological molecules, and why DNA is called the 'blueprint of life.'

Function of Enzymes: Substrate, Active Site & Activation Energy

8. Function of Enzymes: Substrate, Active Site & Activation Energy

In this lesson, we'll learn how enzymes function to lower the activation energy of a chemical reaction. Enzymes bind to their substrates to perform all kinds of important and essential cellular processes, as well as processes that help you enjoy a slice of pizza!

Enzymatic Reactions: Inhibition and Regulation

9. Enzymatic Reactions: Inhibition and Regulation

Enzymes are generally not allowed to run uncontrolled in a cell. While they are useful in catalyzing reactions, there is a time and place for everything. In this lesson, we'll discuss enzyme activators and inhibitors that regulate these reactions positively and negatively, respectively.

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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