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

A hands-on activity from Access Excellence for advanced biology classes. Students are given a crime scenario and three suspects. Their mission is to determine 'Who Dunnit?' by obtaining and analyzing DNA samples. Requires extensive...

[Free Registration/Login may be required to access all resource tools.] Discusses the structure and role of proteins.

Read answers and questions about Lyme disease from The American Lyme Disease Foundation which fall under the follwing categories: "Chronic Lyme disease/post-Lyme syndrom," "Prevention," "Risk Assessment," "Testing," "Tick ecology," "Tick...

At this site from The Nobel Foundation you can download and read Wendell Meredith Stanley's Nobel Lecture, entitled "The isolation and properties of crystalline tobacco mosaic virus." Lecture is available in PDF format.

At this site from The Nobel Foundation you can read about Frederick Grant Banting's work in the medical field, specifically his discovery of insulin, a discovery which earned him the 1923 Nobel Prize, a prize he shared with John James...

This site from the MayoClinic.com provides great information on congestive heart failure. The article includes links to topics such as: signs and symptoms, causes, risk factors, screening and diagnosis, complications, treatment and...

What do you know about your digestive system? This site feature factoids and more interesting information concerning this human body system. Trace the path of food from one end to the next.

A quick, five question review over various concepts of chemical reactions.

This lesson focuses on DNA including it's structure,components,and how it goes together to form genomes. It also provides to links to a video and a test.

Read the passage "Preventing Lipopolysaccharide Formation in Cystic Fibrosis Patients" and complete the five-question quiz.

Read this passage and study the graphic to complete a five-question quiz concerning the heart attack.

Practice for the MCAT by answering questions based on the given graphs about pancreatitis.

Read a passage about chemotherapeutic agents and answer the follow-up questions using the graphs provided.

Practice for the MCAT by reading a passage about ACE inhibitors and the renal regulation of blood pressure and answer the follow-up questions based on the provided graph.

A video showing an animation of how carbon dioxide is exchanged from tissues to the lungs. Understand how an enzyme catalyzes the diffusion and breakdown of carbon dioxide in the red blood cells and lungs to have allowed it to be...

Discusses the structure of the matrix inside a mitochondrion and how hundreds of concentrated enzymes are held there. The matrix takes part in mitochondrial functions such as the Krebs cycle, the electron transport chain, ATP synthesis,...

Two multiple-choice quizzes, one on the processes and types of biological molecules, the other on the structure and replication of DNA.

Tutorial explains the processes of restriction digestion and gel electrophoresis and provides an interactive exercise to further your understanding.

This site from Ohio State University provides a good outline of the process of replicating DNA. The outline contains a numerous amount of embedded vocabulary links, illustrations of the process and also review questions and solutions.

This article, written for younger readers, explains cystic fibrosis (CF), an inherited disease that causes the body to produce mucus that's extremely thick and sticky.

How the human metabolism works and health problems that can develop are explained in clear language.

[Free Registration/Login may be required to access all resource tools.] Definition of chemistry and examples of chemistry in everyday life.

[Free Registration/Login Required] Interactive shows a graph illustrating the effect of pH on pepsin's reaction rate.