Directions
Watch the following video from NOVA
https://www.pbs.org/video/nova-wonders-whats-living-in-you-fnbfuy/
According to the video, how do the numbers of microorganisms in and on our body compared to the number of our own cells, the number of stars in the galaxy, and the weight of one of our important organs? What term describes this collection of microbes that inhabit and use our body like an ecosystem? What specific organisms are these microbes? Restating the tip-to-tip analogy used in the video, describe on an evolutionary scale how old some of these single-celled microorganisms are in relation to multicellular animal and human cells and how they compare.
What type of organism that resides and is thought to have sex on your face is described in this video? Describe the organism in question, indicating its relative size, lifestyle/reproduction, and the number of species. Are these species found on any other organism? What does the presence or absence of this organism on species other than humans indicate from an evolutionary perspective?
The video describes the popularity of postmortem photos in the 19th According to the video, why were they taken? Name three common diseases of the time that are mentioned and the scientist who first linked these “animalcules” to certain diseases using the germ theory.
In the video, a researcher is credited with noticing a Petri plate in which another type of organism was killing the bacteria he was studying. Who was this researcher, and what type of organism was killing the bacteria? How was this knowledge used by the researcher?
The video describes the potential role of microbes in triggering and preventing common allergies. What social group does the video focus on because of their overall lower rate of allergies? To what does the research being conducted on this group attribute to the group’s success? How could this mechanism be used to increase the health of the rest of our population?
The video explains the effects of antibiotics on the evolution of the microbiota of the gut. How are bacteria helpful in maintaining a healthy gut? How can they create a less diverse ecosystem? Describe the effects of using antibiotics to treat ailments of the GI tract.
The video describes the historic use of “poop soup” and a modern equivalent technique. What society used the historic technique, and why? What disease does the video indicate the modern technique is used to treat? Describe how the treatment is given, its success rate, the success rate of other treatments for the same type of disease, any potential dangers, and most likely how/why this modern treatment is effective.
The video discusses “fat” mice. How were they created in the lab, and why? What did the research indicate in the broader scope regarding microbes and human health? What other types of research did this project lead to?
The video discusses the effects of the microbiome on the brain, specifically focusing on potential causes of Parkinson’s disease. How (literally) in the gut linked to the brain? How do the microbes in our gut affect our brain? Why did they use germ-free mice for this study, and what term did they use indicating “germ-free? What symptom of Parkinson’s was the focus of this study, what was the treatment (what did they do to the mice), and how were the results measured? What conclusions (if any) can be drawn from the results of the study?
How was a follow-up study on autism conducted? What autism-like symptom or behavior in mice was studied, what physical symptom did he find present in both mice and children with autism, and how were the mice treated? What were the results of the treatment? Does this indicate that humans will behave the same way if given the treatment, and why or why not?

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