Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.

Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.

By the end of this section, you will be able to:Discuss the role of carbohydrates in cells and in the extracellular materials of animals and plantsExplain the classifications of carbohydratesList common monosaccharides, disaccharides, and polysaccharides

By the end of this section, you will be able to:Discuss the role of carbohydrates in cells and in the extracellular materials of animals and plantsExplain the classifications of carbohydratesList common monosaccharides, disaccharides, and polysaccharides

By the end of this section, you will be able to:Describe the four major types of lipidsExplain the role of fats in storing energyDifferentiate between saturated and unsaturated fatty acidsDescribe phospholipids and their role in cellsDefine the basic structure of a steroid and some functions of steroidsExplain the how cholesterol helps to maintain the fluid nature of the plasma membrane

By the end of this section, you will be able to:Describe the four major types of lipidsExplain the role of fats in storing energyDifferentiate between saturated and unsaturated fatty acidsDescribe phospholipids and their role in cellsDefine the basic structure of a steroid and some functions of steroidsExplain the how cholesterol helps to maintain the fluid nature of the plasma membrane

By the end of this section, you will be able to:Describe the structure of nucleic acids and define the two types of nucleic acidsExplain the structure and role of DNAExplain the structure and roles of RNA

By the end of this section, you will be able to:Describe the functions proteins perform in the cell and in tissuesDiscuss the relationship between amino acids and proteinsExplain the four levels of protein organizationDescribe the ways in which protein shape and function are linked

By the end of this section, you will be able to:Understand the synthesis of macromoleculesExplain dehydration (or condensation) and hydrolysis reactions

By the end of this section, you will be able to:Understand the synthesis of macromoleculesExplain dehydration (or condensation) and hydrolysis reactions

A comprehensive Life Sciences textbook for Grade 10. This resource includes an interactive online textbook which can be read on personal computers, tablets, and mobile phones. Downloadable textbook and Teachers' Guide are available in PDF format. Topics covered include: Biological drawings, diagrams, charts and tables, Organic and Inorganic Compounds, Cells and Molecules, Plant and Animal Life Systems and Ecospheres, History of Life on Earth

This site takes us into the world of structural biology -- a branch of molecular biology that focuses on the shape of nucleic acids and proteins (the molecules that do most of the work in our bodies). Learn about the structures and roles of proteins, tools used to study protein shapes, how proteins are used in designing new medications (for AIDS and arthritis), and what structural biology reveals about all life processes. Find out about careers in biomedical research.

All cells, organs and tissues of a living organism are built of molecules. Some of them are small, made from only a few atoms. There is, however, a special class of molecules that make up and play critical roles in living cells. These molecules can consist of many thousands to millions of atoms. They are referred to as macromolecules (or large biomolecules).