Biology — Biology General — Study and teaching. How would you decide this question? After another month, the culture container isonce again coated with a biofilm. Despite this, Cisar et al. Assignment for Part IV: They typically include a summary of the case, teaching objectives, information about the intended audience, details about how the case may be taught, and a list of references and resources.

Return to the homepage. Discuss which set of evidence Kajander and Ciftcioglu or Cisar et al. You must provide compelling, positive evidence that offers an alternative explanation of the published observations. Choose ONE property of life and propose a way you could test for thatproperty. Sterile DMEM culture media will not form a biofilm on its own.

It is possible to scrape up this biofilm, dilute the amswer 1: The case-study based activities include: Dilutions offormation in the 1: Decide if these experiments explain the observations of 1.

nanobacteria case study answer key

Report a Problem with this Resource Record. Data Sheet 1 for Part IVExperiment ResultCulture of Nanobacteria maintained in culture generate a biofilm on the surface of theNanobacteria culture container within 3 weeks.

These theories must either bemodified or abandoned when new evidence stuxy made available that challenges our understanding.

Nanobacteria: Are They or Aren’t They Alive? A Case …

Electron and light microscopic images of nanobacteria-like particles scraped from DMEM-containing subcultures of 0. Manybacteria can cause diseases.


Read over the summary information presented above and examine the data. When purified phosphotidyl inositol a phospholipid common to biological membranes was added to the culture, biofilm formation occurred within two weeks.

This California State University lesson plan contains materials for a five-part activity regarding whether or not nanobacteria are alive. RadiationTransferability When a biofilm nanobacteria isolated by scraping the surface of an established culture was diluted 1: Over the next several class meetings we will be considering the evidence for the existence ofnanobacteria and their role in the process of biomineralization. Are They or Stud They Alive?

nanobacteria case study answer key

You must provide compelling, positive evidence that offers an alternative explanation of the published observations. Atnanobacteria these high dilutions there was no evidence of biofilm formation even after 8 weeks. Create your own flipbook. Olavi Kajander andNeva Ciftcioglu.

To answer this you need to think aboutthe properties common to nanobacteriia living things and how you would test whether thenanobacteria possessed these properties. Next class period we will be debating the status of nanobacteria as a living organism.

Nanobacteria: Are They or Aren’t They Alive? A Case Pages 1 – 18 – Text Version | FlipHTML5

D A partly demineralized nanobacterial group A-D, X The inability to repeat results could arise from unknown variables quality of water, etc. Nanobafteria authors report that they were able to repeat this 1: Assignment for Part III: The name, nanobacteria, refers to the very small size of these organisms onthe order of 0.


nanobacteria case study answer key

It stud based on two conflicting reports in the scientific literature on the status of nanobacteria as living organisms in order to explore basic concepts related to the biological definition of life and the process of scientific investigation.

To become a paid subscriber, begin the process by registering here. Nanobacteria have been isolated from withinhuman kidney stones, leading to the suggestion that these bacteria may be the cause of this disease. Which of the new results are supportive of Kajander and Ciftcioglu? A DIC image of bottom-attached nanobacteria after a 2-month culture period.

Nanobacteria: Are They or Aren’t They Alive?

Cell-like The nanobacteria isolated from the biofilm has a coccoid round appearance. Subscribe to bulletins Automatically be notified about new resources that match your interests.

Look over the final set of experimental data provided by Cisar et al. It’s easy, fast, and FREE! Consider the results from each of the three experiments described above.