This video segment adapted from NOVA illustrates why carbon is at the center of life on Earth. It also asks whether carbon-based life might exist on other planets. [1:38]

Proteins are the workhorses of our bodies. Investigate what proteins are made of and their functions.

Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat. [13:45]

Did you know the structure of proteins can determine function of the proteins? This video reviews over the different order of proteins from primary to tertiary. Video will focus on the tertiary structure of proteins and how side chain...

Uniporters, symporters, and antiporters are proteins that are used in the transport of substances across a cell membrane. This video describes how each of these works in the transport process. [7:13]

Meet Professor Cathy Drennan, whose research focuses on a protein inside microorganisms and how it converts carbon dioxide, a greenhouse gas that accelerates climate change, into energy.

This lesson will look at the effect that diet and exercise have on normal body functions. It is 1 of 5 in the series titled "Nutrition and Health."

This lesson will describe the levels of protein structure as well as define the role of proteins in your body. It is 8 of 9 in the series titled "Proteins."

Paul Andersen explains the structure and importance of proteins. He describes how proteins are created from amino acids connected by dehydration synthesis. He shows the importance of chemical properties in the R-groups of individual...

Paul Andersen continues his description of DNA and RNA. He begins with the structure of DNA and RNA and moves into the process of DNA Replication. He also describes the central dogma of biology explaining how DNA is transcribed to mRNA...

Paul Andersen describes the macromolecules that make up living organisms. He starts with a brief description of organic chemistry and the importance of functional groups. He also covers both dehydration and hydrolysis in polymerization....