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"Education is the most powerful weapon which you can use to change the world”
– Nelson Mandela

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Quiz Chapter 1 3

Quiz Chapter 1 3

Q PartialQuestion 1 0.17 / 0.5 pts We are increasingly understanding how humans can be considered walking ecosystems, harboring an enormous diversity of non-human life! If you were to analyze all the microbes in and on your body, you would be able to find representatives of which of the following? Question 2 0.5 / 0.5 pts The bacterium Clostridium difficile causes nearly half a million infections annually in the United States, resulting in between about 15,000 and 30,000 deaths each year. This disease most commonly occurs in a healthcare setting, e.g., in hospitals and nursing homes, especially among immunocompromised and elderly, and in associationg with antibiotic treatment. A recent treatment being studied is a fecal transplant: namely, transferring a stool sample from the intestinal tract of a healthy donor to the patient. This process has yielded a very high success rate in clearing the C. difficile infection. What is the most likely explanation for this outcome? Question 3 0.5 / 0.5 pts Which of the following most accurately describes our current understanding of the human microbiome? Choose all that apply. Question 4 0.5 / 0.5 pts In microscopy, resolution is best defined as ______. IncorrectQuestion 5 0 / 0.5 pts The image shows a Gram stain of Bacillus subtilis, a common environmental species found in soils, magnified 1,000x. The clear small oval structures observed in some of the cells as well as outside them are called ______.

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1.Animals Protists Archaea Viruses Plants 2.Disruption of the normal microbiota of the patient allowed the C. difficile to cause the infection; the fecal transplant helps restore a healthy microbiota in the patient. 3.Our microbial cells outnumber our human cells by between about 3 to 1 and 10 to 1. The microbes we carry in our gut weigh about as much as our brain. 4.the ability to distinguish two objects that are very close together as separate