Tag: Winogradsky column
The start of the Fall Semester and the 2015-16 school year brings with it a new start in the biology programs at McMurry. New Biomedical Science majors join those from Biology and Life Sciences in taking the new Biology Core – common classes that insure a common experience covering the breadth of biology. This fall, the first new course is being taught – General Biology I – and its follow-up (ingeniously called General Biology II) will follow in the spring.
Lots of schools have a similar two-semester freshman biology sequence. Like many, ours is cells, processes and genetics in the first and multicellular organisms, diversity of life and ecology in the second. However, we hope that the lab for General Biology I will set our program apart from most. The lab, designed by Dr. Benoit, is based on a few “canned” labs interspersed among several multi-week projects covering key concepts and teaching skills central to future biology courses. There will be a project creating and studying Winogradsky columns that will emphasize metabolism and nutrient cycling and ecological succession. Another will use yeast to demonstrate carbon dioxide generation in fermentation and alginate beads to follow its consumption in photosynthesis. A third will require groups of students to design experiments with yeast to study fermentation changes with variations in substrates or environmental conditions. And mitosis and meiosis will be followed using yeast mating experiments. Not exactly an approach taken by most colleges for teaching first semester college students. Our intent is to give them an engaging course unlike anything taken before, one that teaches principles and how science is done and provides experience putting skills learned into action to provide answers to biological questions.
We should be posting stories from this course here and on our Facebook page (https://www.facebook.com/pages/McMurry-Biomedical-Science-Program-BIMS/118598184311) during the semester. Hope you will follow our journey!
1. Nicole McGunegle (middle left, with our Dean Alicia Wyatt and human biology professor Dr. Larry Sharp) became the sixth BIMS majors to complete Honors thesis research this year. Her work was on heat resistance of wild type and genetically-modified spore-forming bacteria. She was one of four Biology Department graduates in December, the others being Kelly Croci, Shayna Hoag, and Collin Valdez. All four are pursuing advanced graduate or professional school programs (Medical School, Physician Assistant school, Optometry School, Nutrition and Dietetics graduate program).
2. There was an official announcement that the Department of Biology was the recipient of a 160-acre tract of land in Callahan County that will serve as a field research station. The donor is Bill Libby, long-time professor of history and religion and the founder of the Cross-Country program at McMurry. The field station will be called Firebase Libby, in recognition of Bill’s time spent as a chaplain with the 101st Airborne in Viet Nam. Every facet of McMurry’s biology and biomedical science programs has identified ways in which this valuable asset can be used for research and student projects. More here: http://blogs.mcm.edu/sncs/?p=1159.
3. On the research front, Dr. Tom Benoit received notification in December of the acceptance of an article written for the Journal of Microbiology and Biology Education. It details the use of diatomaceous earth in construction of Winogradsky columns for study of microbial ecology and mineral cycling in biological systems. Three professors also received good news about funding for research during the Christmas break: Dr. Anna Saghatelyan is partnering with Dr. Hyun-shun Shin of Chemistry on a project to identify new antimicrobials from area plants. They will receive funding from the Sam Taylor Foundation. This work includes the Honors Research of Kara Black, which was presented at the regional ACS conference this fall. More here: http://blogs.mcm.edu/sncs/?p=1150. And Drs. Dana Lee and T.J. Boyle both were notified of their receipt of KIVA grants for next year, funding for research on the genomics of bats and the distribution of crabs in lakes of west Texas.
4. And most exciting has been the resurgence of the Biology Club and Tri-Beta, under the capable leadership of Drs. Boyle and Lee. First came a very successful “Pie a Professor” fundraiser (http://blogs.mcm.edu/sncs/?p=1145) that provided the funding to begin an effort to greatly expand the recycling efforts on campus (http://blogs.mcm.edu/sncs/?p=1155). This is only the beginning of growth and contribution to the campus and community from the Biology and Biomedical Science students at McMurry.
5. Finally, as the year ends we find a new beginning on the horizon for the Department of Biology. Extensive revisions to the BS Biology, BS Biomedical Science, and BS Life Sciences degrees are coming! New courses and a roadmap for the program changes are in the final stages of approval, and incoming students for the Fall 2015 semester will benefit from the tweaks being made. A common biology core of 16 hours, including a junior seminar course to explore careers and prepare for entrance exam tests for graduate and professional programs, will be taken by all students. We expect great things to come from these data-driven improvements!
So, from all of us at McMurry, we hope 2014 was equally productive and gratifying. And we hope all of us will experience an even better 2015!
In BIMS 1101 Unicellular Organisms Lab, Dr. Benoit takes students through an amazing tour of the unseen world, one filled with bacteria and protozoa and algae and yeast. The course teaches basic cell biology and the diversity that exists among the smallest forms of life. As a way of demonstrating the metabolic diversity of bacteria, all students create Winogradsky columns by filling Falcon flasks with diatomaceous earth, a variety of chemicals, and some water drawn from pond sludge (see photo). These are the students’ pets, cared for and tended to by the students. Dr. B encourages students to drop by the lab regularly to visit their pets and to enjoy their journey to maturation. At the end of the semester, students are free to take them home where they can continue to mature and change for many years.
The preparation begins white usually, but chemical changes caused by a variety of bacterial turn the many minerals present into a technicolor show. A good balance of chemicals and diversity of bacteria can result in reds and greens and blacks and yellows and purples as one species of bacteria after another transforms the minerals into colorful compounds. It is the microbial equivalent of a garden filled with diverse plants.
As educational as the Winogradsky column is, the fun take on the project by Dr. Benoit demonstrates an important component of science at McMurry – if it isn’t fun, something is wrong!