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Bacteriology Exam 1 questions & correct answers

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  • Bacteriology

Bacteriology Exam 1 questions & correct answers

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  • October 29, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Bacteriology
  • Bacteriology
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BravelRadon
Bacteriology Exam 1 questions &
correct answers

microbes/microorganisms - correct answer ✔✔living things too small to be seen with the unaided eye

includes bacteria, fungi, protozoa, and microscopic algae



2 names each organism has - correct answer ✔✔genus and species



Bacteria - correct answer ✔✔-prokaryotes- no nucleus or other membrane-bound internal organelles

-single-celled

-peptidoglycan cell walls

-divide via binary fission

-derive nutrition from organic to inorganic, chemicals, or photosynthesis



Archaea - correct answer ✔✔-prokaryotes

-lack peptidoglycan cell walls

-often live in extreme environments

-include: methanogens, extreme halophiles, extreme thermophiles



Fungi - correct answer ✔✔-eukaryotes

-chitin cell walls

-absorb organic chemicals for energy

-yeasts are unicellular

-molds and mushrooms are multicellular

-molds contain masses of mycelia, composed of filaments called hyphae



Protozoa - correct answer ✔✔-eukaryotes

, -absorb or ingest organic materials

-mobile via flagella, cilia, pseudopods

-free-living or parasitic (nutrients from living host)



Algae - correct answer ✔✔-eukaryotes

-cellulose cell walls

-found in freshwater, saltwater, and soil

-photosynthesis for energy

-produce oxygen and carbphydrates



Viruses - correct answer ✔✔-acellular

-DNA or RNA core

-core surrounded by protein coat

-coat enclosed in lipid envelope

-replicated only when in living host cell

-insert outside living hosts

-non-living



Spontaneous Generation - correct answer ✔✔the hypothesis that life arises from nonliving matter; a
"vital force" is necessary for life



Biogenesis - correct answer ✔✔the hypothesis that living cells arise only from preexisting living cells



Louis Pasteur - correct answer ✔✔-microbes are responsible for fermentation

-responsible for spoilage of food and beverages

-these bacteria could be killed by heat

-germ theory of disease



Fermentation - correct answer ✔✔microbial conversion of sugar to alcohol in the absence of air

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