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
Organic chemistry is the study of molecules that come from living things and previously living things. Learn more on an introduction to organic molecules and functional groups within biological science.
2. Introduction to Organic Molecules II: Monomers and Polymers
An organic molecule is a complex molecule that is primarily made of carbon atoms and is bonded with other elements or other carbon atoms. Learn more about organic molecules, monomers, polymers and their functions or definitions.
3. Structure and Function of Carbohydrates
Carbohydrates, also known as sugars, are a group of compounds found in organic tissues and foods. Explore the structure and function of carbohydrates, learn how to count carbons, discover glycosidic bonds, and review fibers and starches.
4. Structure and Function of Lipids
Lipids, also known as fats, are a group of compounds that dissolve in nonpolar solvents but are insoluble in water. Explore the structure and function of lipids, the definition and functions of triglycerides such as saturated fats, and review the other types of lipids that help fuel the human body.
5. Proteins I: Structure and Function
Without peptide bonds joining together chains of amino acids to create large organic compounds called proteins, it would be impossible for humans to function. Explore the structure of proteins and how they function as enzymes to trigger molecular reactions and some of the many other functions of proteins in the human body.
6. Proteins II: Amino Acids, Polymerization and Peptide Bonds
Proteins are molecules made up of chains of amino acids bound together by peptides. Explore how polymerization helps form peptide bonds, discover how peptides are written, and learn the different types of peptides.
7. Proteins III: Structure and Characteristics of the 20 Amino Acids
Proteins are essential molecules made up of one or more long chains of amino acids. Explore the structure and characteristics of the twenty amino acids, discover the differences between polar positive and polar neutral amino acids, and learn about special amino acids.
8. Proteins IV: Primary, Secondary, Tertiary and Quaternary Structure
Proteins are essential molecules made up of one or more long chains of amino acids. Explore primary, secondary, tertiary, and quaternary protein structure, then discover the effects of denaturation.
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