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Harvard University *

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2020

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Biology

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Apr 3, 2024

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pdf

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1. Compare eukaryotic and prokaryotic cells. Prokaryotic cells and eukaryotic cells differ from each other but also have some similarities. Prokaryotic cells reproduce asexually while eukaryotic cells produce sexually, they are also smaller in size (1-10 μm) compared to eukaryotic cells (above 100 μm) , and don’t have any organelles bounded by a membrane. They both contain cytoplasm, DNA, ribosomes, and a cell membrane. They both are living but prokaryotic cells live in the form of bacteria and archaea, meanwhile, eukaryotic cells live in the form of microbial cells with some exceptions of bacteria, viruses, and prions. 2. List the beneficial aspects of microbes. What is the goal of the public health microbiologist when it comes to microbes? While some microbes cause disease in humans, most of them are needed in everyday life. The beneficial aspects of microbes include the production of distilled products, fermented and industrial products, the production of vaccines, antibiotics, pesticides, genetically engineered therapeutics, used to eliminate pathogens, and bioremediation. The goal of a microbiologist in public health is to evaluate how microbes work to help prevent the community from getting ill as well as learn how other microbes can help treat certain illnesses and diseases. 4. Compare bacteria and viruses Bacteria and viruses can both cause diseases and infections in our bodies even though they are both different. Bacteria are larger than viruses, able to live and reproduce on their own while viruses need a host and are unicellular and viruses have no cells. In public health, bacteria can be considered beneficial because not all bacteria is bad for our bodies, but we can’t say the same about viruses. 9. List three modern challenges in public health microbiology and potential ways to mitigate them. Challenges in public health microbiology have been around for centuries all around the world. Three modern challenges they face today is that bacteria are more resistant to antibiotics, new pathogens are being discovered and reproducing more quickly, and lastly a shortage of qualified people to do the job. Potential ways to mitigate these would be to evolve better vaccines for our communities, make our communities aware of the new pathogens and teach them how to stay safe, and increase salaries to those who work these jobs.
Citations Aryal, Sagar, et al. “Differences between Bacteria and Viruses.” Microbiology Info.Com , 10 Aug. 2022, microbiologyinfo.com/differences-between-bacteria-and-viruses/. Learning, Jones & B. Custom eBook for Georgia State University: Determinants of Health, PH 2020. Available from: VitalSource Bookshelf, Jones & Bartlett Learning, [Insert Year of Publication]. Michael Greenwood, M.Sc. “Eukaryotic and Prokaryotic Cells: Similarities and Differences.” News , 19 July 2023, www.news-medical.net/life-sciences/Eukaryotic-and-Prokaryotic-Cells-Similarities-and-Differen ces.aspx. Society, Microbiology. “What Microbiologists Do.” Microbiology Society , microbiologysociety.org/careers/what-microbiologists-do.html. Accessed 29 Feb. 2024. Somsel, Patricia, and David Warnock. “Emerging issues for the public health laboratory.” Emerging infectious diseases vol. 10,11 (2004): 2049-50. doi:10.3201/eid1011.040797_13
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