Module 2: Biochemistry

Life on earth is complex and diverse, so it may surprise you to learn that all life on earth has some similar ingredients.  Without these ingredients, there would be no life on this planet, at least, not the way it is now.  In this module, you will explore the importance of these ingredients and how they function together to build dynamic organisms and biological systems. First, you will learn about the properties of water and how they impact biological studies. Next, you will study what makes something an acid or a base, and why the measurement on the pH scale is so important. Then, you will explore organic molecules - some of which you will find in your own body. At the end of the module, you will learn more about chemical reactions and related enzymes.

Getting Started

List iconPart of your study of biology will include this module on biochemistry, or the intersection between the study of biology and chemistry. Before you begin, consider how the various branches of science intersect one another. From your study of biology so far, what other branches of science have you also studied? From memory, make a short list of some concepts that intersect between biology and the other branches of science, like Earth science, physics, chemistry.

Key Vocabulary

To view the definitions for these key vocabulary terms, visit the course glossary.

acid exothermic nucleotide
activation energy fatty acid organic
adhesion heat of vaporization pH
amino acids high heat capacity phospholipid
base homeostasis polar
buffer hydrogen bond polymer
capillary action hydrophilic polysaccharide
carbohydrates hydrophobic products
catalyst ion protein
cohesion lipid reactants
denature macromolecule solute
density monomer solution
disaccharide monosaccharide solvent
endothermic non-polar substrate
enzyme nucleic acid surface tension