A collection of articles about innovations in automotive technology. Titles include: Prying Open the Prius, Cheaper Fuel Cells, Better than Hybrids, and Free Power for Cars.

[Free Registration/Login may be required to access all resource tools.] The cell membrane is semi-permeable. Sometimes molecules need the help of special transport proteins or an input of energy to help them move across it. When an input...

The circulatory system transports substances between the exchange surface and cells. It delivers oxygen and glucose to the tissues for respiration, which is the release of energy to cells.

Five multiple-choice quiz questions covering cellular respiration. Students have the opportunity to check their answers after submitting their results.

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

This site provides links to many good sites covering the complex concept of photosynthesis.

For this biology lab, students use pineapple juice as an enzyme, and jello as a substrate to illustrate an enzyme/substrate complex.

This lesson introduces the process of passive transport, explaining that it is a form of transport that does not require energy, and moves molecules down their concentration gradient. It is 2 of 4 in the series titled "Passive Transport."

[Free Registration/Login may be required to access all resource tools.] Describes the Calvin cycle, the second stage of photosynthesis.

[Free Registration/Login may be required to access all resource tools.] Definition of a biochemical reaction, the different types and the importance of enzymes in biochemical reactions.

Work samples, phenomena, assessment templates, and videos that directly address standard MS-LS1-7: food and chemical reactions.

Test your knowledge on ATP and reaction coupling with this quiz.

Test your knowledge of cellular respiration in this quiz made for high school biology students.

Cellular respiration multiple choice questions to test students' knowledge of the topic from AP Biology.

Test your knowledge on active transport.

The aim of this article is to relate the history of oxygen in the atmosphere to the evolution of photosynthesis, aerobic respiration, mitochondria, and life on earth.

A large part of engineering involves presenting products, concepts, and proposals to others in order to gain approval, funding, contracts, etc. The purpose of this activity is to fine-tune students' presentation skills while allowing...

Welcome to Planet Ark's daily Reuters World Environment News - the most comprehensive source of environmental news on the Net. To read previous news stories, please use the search engine below to find stories relating to any...

This interactive site provides animations and activities in several areas of physiology. The images are simple, but clear. The accompanying text provides a good description of the process being shown.

Learn about the process of cellular respiration in the human body.

A biology course for high school students.

Students test whether the color of a material affects how much heat it absorbs. Students will place an ice cube in a box made of colored paper (one box per color; white, yellow, red and black), which they will place in the sun. The...

[Free Registration/Login Required] An informational text about solar panels being used to create electricity. A question sheet is available to help students build skills in reading comprehension.

An article about the spontaneous activity of the brain.