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MCB 2610 Exam 1 Study Guide Solutions

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MCB 2610 Exam 1 Study Guide Solutions Microbiology - ANSWER-The study of microbes Micro bio examines... - ANSWER-How microbes interact with humans and food and how they can be used by humans Prokaryotic cells - ANSWER-Lack a true membrane-delimited nucleus Eukaryotic cells - ANSWER-Have a memb...

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  • October 30, 2024
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MCB 2610 Exam 1 Study Guide Solutions


Microbiology - ANSWER✔✔-The study of microbes


Micro bio examines... - ANSWER✔✔-How microbes interact with humans and food and how they can be

used by humans


Prokaryotic cells - ANSWER✔✔-Lack a true membrane-delimited nucleus


Eukaryotic cells - ANSWER✔✔-Have a membrane enclosed nucleus


More complex morphologically


Carl Woese used ribosomal RNA to divide organisms into... - ANSWER✔✔-Domains:


Bacteria


Archaea


Eukarya


Describe Bacteria - ANSWER✔✔-Usually single-celled


Majority have cell walls with peptidoglycan (gram positive)


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Most lack a membrane bound nucleus


Everywhere, even extreme places


Come cause disease but most are beneficial


asexual reproduction


Describe Archaea - ANSWER✔✔-Distinguished from Bacteria by unique rRNA sequences


Lack peptidoglycan and have unique membrane lipids (gram negative)


Some have unusual metabolic characteristics


Extreme environments


asexual reproduction


Describe Eukarya - Eukaryotes - ANSWER✔✔-Generally larger than B and A


Plants, Animals


Microorganisms like protists - algae, protozoa, slime molds, water molds


Fungi - yeast (unicellular), molds (multicellular) - primarily decomposers


Acellular Infectious agents - ANSWER✔✔-Viruses - smallest of all microbes, simple (consist of proteins

and nucleic acids), require a host cell to replicate

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Virouds and virusoids - infectious agents composed of RNA


Prions - infectious proteins


Define Life - ANSWER✔✔-Metabolism


Growth


Reproduction


Genetic variation/evolution


Response/adaptation to environment


Homeostasis


Macromolecules necessary for life - ANSWER✔✔-Lipids, Proteins, Carbs, nucleic acids


Polypeptides - ANSWER✔✔-Proteins - many jobs - most important is enzyme as catalyst of chemical

reactions


Nucleic Acids - ANSWER✔✔-Storehouse for genetic information


Comparison of DNA allows us to break life into domains


Lipids - ANSWER✔✔-Form foundation of plasma membrane




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