About This Chapter
GRE Biology: Organic Chemistry Review
Re-examine the organic molecules and compounds essential to living organisms with this chapter's video lessons. Our instructors use plenty of illustrations and examples to walk you through the following topics:
- Functional groups of organic molecules
- Monomers and polymers
- Carbohydrate structure and function
- Structure and function of lipids
- Protein structure and function
- Characteristics of the 20 amino acids
Each instructional video is accompanied by a matching transcript that highlights key terms in bold. A jump feature is available in the timeline so you can skip to main points in each video. Use these resources to review key organic chemistry concepts, and check your understanding of lesson material with the multiple-choice quizzes that follow.
GRE Biology Objectives
The GRE Biology test is a graduate school admissions exam taken by students who want to supplement their application materials. The exam consists of around 190 multiple-choice questions equally divided among three main content domains: cellular and molecular biology, organismal biology, and ecology and evolution.
An understanding of the organic chemistry concepts covered in this chapter could prove useful when answering cellular and molecular biology questions covering biological compounds, enzyme activity and metabolic pathways, among other exam topics.
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.
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.
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.
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.
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.
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.
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.
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.
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