Why is lactase important? Biology scholars explore enzyme function in a structured inquiry lab. The activity tasks lab groups with observing how temperature and pH affect enzyme activity, as well as determining which milk products...

An informative lesson has learners read about, discuss, and study the classification, structure and importance of the following biomolecules: carbohydrates, proteins, lipids, nucleic acids, and enzymes. 

Milk does a body good ... unless, of course, someone is lactose intolerant. Pupils play the role of pharmaceutical scientists in a guided inquiry lab about lactase. Lab groups collaborate to learn more about lactose intolerance, how...

Can your biology class crack the Case of the Crown Jewels? Junior forensics experts try their hands at DNA restriction analysis in an exciting lab activity. The lesson introduces the concept of restriction analysis, teaches pipetting and...

The 20th installment in a series of 36 focuses on the characteristics of the p-block elements. Learners discuss, read about, and answer questions pertaining to the occurrence of these elements in nature, their electron configurations,...

Article summarizes recent University of Iowa research. Progeria patients show deficiencies in certain antioxidant enzymes. Author provides information about possible application of gene therapy in future progeria research and treatment

Gives examples of chemical interactions occurring in the human body, in the world around us, in foods, and in products we use.

What is a catalyst? This Khan Academy resource includes examples of enzymes, acid-base catalysis, and heterogeneous (or surface) catalysis.

Part of a year-long high school biology class online project, this page discusses the two major roles of lysosomes.

Explanation of how genetic engineering works. Analogy with molecular scissors cutting a "sentence" of DNA. Has nice animations.

This article looks at a few of the most important core cell cycle regulators: proteins called cyclins, enzymes called Cdks, and an enzyme complex called the APC/C.

Article looks at different types of receptors and ligands, seeing how they interact to turn information from outside the cell into a change inside the cell.

This is a brief Nobel E-Museum biography on Wendell Meredith Stanley, the scientist and co-recipient of the 1946 Nobel Prize in Chemistry.Read about his education, as well as his contributions to various scientific studies through which...