Students, in groups, design their own experiments to determine how the mode of application of the virus extract affects the various plants that students have grown from seed.

Students develop a joint undertaking designed to solve an environmental problem in their local community. They tackle the problem of erosion of banks and chemical run-off into a nearby lake, which is within walking distance of school.

Students become educated on what a riparian is, the need for riparian, and how a riparian corridor (forest, habitat) can protect waterways. Students construct dioramas depicting riparian habitats.

Students examine insects they collect in a sweep nets. They identify as many of the insects as they can.

Students examine soil in forests looking for animals and insects. They divide the animals based on their number of legs and draw the animal they have collected.

Learners explore DNA and restriction enzymes using fragments of DNA separated by electrophoresis on an agarose gel. They analyze the results to see "whodunit".

Students work together to identify proteins in different samples. They calculate the protein concentration in those samples as well. They complete discussion questions to end the lesson.

Students analyze different types of hemoglobin. They use the technique of agarose gel electrophoresis to separate human hemoglobin molecules according to their electrical charge, size, and/or shape. Students relate the migration of...

Students are using a paper chromatography study that is suitable for introductory biology. The absorption spectra studies and gel electrophoresis studies are appropriate for students who have complete both introductory biology and...

Students examine chlorophylls. They explore the absorbing pigments in a variety of plants. Through activities, students determine spectrophotometrically. They compare plant proteins from the family Brassicace to assess the level of...

This site from the Department of Chemistry at the Washington University is an excellent site on how buffers are used in the human body and how they react to exercise.

Sample problems involving properties of buffers.

This tutorial presents a review of the definitions for pH and buffer solutions

This tutorial describes how buffers protect against pH changes when strong acid or base is added.

Explains what a buffer is, how it is prepared, how it works to resist drastic changes in pH, and the characteristics of an effective buffer. Human blood also contains a buffer which is crucial for maintaining the blood's pH.

Use this site to explore the experimentation process of "Soil buffering."

Buffers are solutions that resist a change in pH. In this activity, students will add HCl dropwise to a measured amount of water, monitoring the pH. Students then repeat the process, using a simple buffer prepared by combining baking...

Explore buffers in lakes, ponds, and streams. "In this experiment, you will observe the effects of limestone on the acidity of water."

An exercise to design a buffer solution with specific properties.

Create a buffer solution at a specific pH using a weak acid and its conjugate base.

As part of acid rain study, (environmental chemistry lab) students investigate the differences in pH of soil samples. They will collect and dry samples from the local prairie including grassland, transition, forest and riverbank and...

In this experiment, you will explore the behavior of the monoprotic acid (acetic acid) and the polyprotic acid (phosphoric acid). By titrating, you will examine the acid and conjugate base species present across the pH scale and the...

Learn the basics of acids, bases, proton concentration, the pH scale, and buffers in this article.

Students examine equilibrium and buffer solutions in a biological setting.