Describes a semester-long study of microorganisms in an aquarium as performed by a beginning microbiology class. Gives results and conclusions drawn by students utilizing many ecological principles to interpret the results. Similar projects could be used from beginning high school through advanced college biology. (EB)

Presents the procedures, results, and conclusions of a study designed to determine (a) the amount and kind of microorganisms present on the uncleaned mouthpieces of band wind instruments and (b) the preventive measures that may be taken to destroy the microorganisms. Considers oral hygiene a must for all wind instrument players. Bibliography. (LC)

Presented is a brief review of the biochemistry and chemistry of nitrogen fixation. (BB)

Reviews history of "recombinant DNA" research, including early experiments and origins of bioethical debates between concerned scientists. Discusses National Institutes of Health (NIH) guidelines and accompanying Environmental Impact statement regarding recombinant DNA research and possibilities of human error covered by neither…

Presents a laboratory model system for introductory microbiology students that involves hands-on studies of bacteria vectored in soil nematodes. Describes a series of experiments designed to demonstrate vector-fomite transmission, bacterial survival, and disinfectant activity. Introduces the concept of genetically engineered microorganisms and the…

Explains how to maintain biosafety in high school level biotechnology and microbiology courses. Focuses on laboratory skills, biohazard containment, and defense perimeters. (YDS)

Describes a project using a multidisciplinary approach for the simultaneous integration of a theme into several disciplines in which participating students apply techniques they learned during the semester and report their findings with a poster presentation. (YDS)

Given is a rationale for using science demonstrations. The development and characteristics of successful demonstrations are presented. An illustration is given in the area of microbiology. A rating sheet is included. (CW)

Describes how paramecium can be identified through the use of DNA-binding fluorescent compounds. The authors used these techniques to test the paramecium stocks from 12 commercial sources. The details of the staining procedures and the results of the commercial tests are presented in this article. (PR)

Argues that the Woesian three domain view of life should replace the five kingdom taxonomic scheme presented in most general biology texts and courses. Presents evidence for employing the three domain scheme and a related activity for classroom use. Contains 11 references. (WRM)

Discusses a model that describes how knowledge is obtained in environmental microbiology. Suggests that constraints on knowledge will yield to relationships between methodological innovations and their iterative application. Contains 132 references. (DDR)

Presents an experiment that tests for spontaneous generation, or abiogenesis. Observes microbial growth in nutrient broth under seven different flask environments. Includes instructions for the methods. (YDS)