This online biology book offers a comprehensive overview of cellular metabolism and fermentation. Content includes a look at glycolysis, anaerobic pathways, and aerobic respiration.

College-level, online textbook explains cellular metabolism and fermentation using full-color illustrations and labeled diagrams.

Web-based activity provides an opportunity for students to study cellular respiration in an up-close and personal way. By following atoms and molecules through an interactive animation, they will be able to see the changes that take...

This article investigates how cellular respiration can be sped up or slowed down in response to ATP levels and other metabolic signals.

Build a gene network. The lac operon is a set of genes which are responsible for the metabolism of lactose in some bacterial cells. Explore the effects of mutations within the lac operon by adding or removing genes from the DNA.

Through interactive learning exercises, students examine the different definitions of energy and how enzymes regulate how the energy is stored and used during cellular respiration. They also take a close look at photosynthesis to learn...

Explains what cellular respiration is, its function, and the three stages it goes through when it takes place in a cell.

Provides an overview of glycolysis which is the first step in the breakdown of glucose to extract energy for cellular metabolism. The article discusses in detail its two main phases: the energy-requiring phase and the energy-releasing...

Learn how prokaryotes get energy and nutrients, and find out the difference among chemotrophs, phototrophs, heterotrophs and autotrophs.

Part of a larger quiz on cellular metabolism. If you get the wrong answer you get a tutorial on the subject. Test your knowledge.

Answer the question wrong and you will get a brief tutorial in the right direction. Answer it right and you must know what you are talking about. Part of a larger quiz on cellular respiration.

NADH and NADPH are enzymes involved in cellular processes. Explains how NADH participates in catabolic reactions where energy is released and NADPH is involved in anabolic reactions where energy is consumed. Their functions and chemical...

Through a combination of slide show tutorials and a video demonstration, learn how enzymes work. [3:00]

[Free Registration/Login may be required to access all resource tools.] Covers the importance of biochemical reactions involving water.

Article takes a look at examples of the different ways cells can change their behavior in response to a signal at both the "micro" and "macro" levels.

A part of a larger quiz on cellular respiration as a whole. If you miss the question, you'll get a tutorial on the subject. If you get it right, you're smart.

Practice for the MCAT by answering questions based on the given bar graphs showing apoptosis and cytokinesis rates.