Microbiology WCC Keith Final Exam 330 Questions with Verified Answers,100% CORRECT
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Microbiology WCC
Institution
Microbiology WCC
Microbiology WCC Keith Final Exam 330 Questions with Verified Answers
Microorganism - CORRECT ANSWER Foundation for all life on earth (3.5 billion years)
microbe - CORRECT ANSWER also includes acellular; may not be alive (virus)
Bacteria - CORRECT ANSWER fundamentally different from other ...
Microbiology WCC Keith Final Exam 330 Questions with
Verified Answers
Microorganism - CORRECT ANSWER Foundation for all life on earth (3.5 billion
years)
microbe - CORRECT ANSWER also includes acellular; may not be alive (virus)
Bacteria - CORRECT ANSWER fundamentally different from other life; most
diverse, most populous, single cell life forms
Protozoa - CORRECT ANSWER animal-like; single celled; pathogenic, mobile
(Malaria)
Fungi - CORRECT ANSWER Eukaryotic; plant-like; single and multicellular
Arthropods - CORRECT ANSWER insects; few pathogens (lyme disease)
,Abiogenesis - CORRECT ANSWER Life from non-living; proper conditions and raw
components= life
John Needham - CORRECT ANSWER Heated broth in sealed flasks.When the broth
became cloudy with microrganisms, he mistakenly concluded that they developed
spontaneously from the broth
Lazarro Spallanzani - CORRECT ANSWER repeated Needham's experiments but
boiled infusions longer than Needhamand suggesting that Needham's results
were due to microorganisms in the air entering his broth
and concluded that all living things come from other living things
Pasteur - CORRECT ANSWER discredited abiogenesis; concluded you need life to
create life
Biogenesis - CORRECT ANSWER development of life from preexisting life
Schwan and Schleiden cell theory - CORRECT ANSWER abiogenesis supporters;
came up w/ first two
1. all living organisms are composed of one or more cells
2. because of 1, cell is most basic unit of life
3rd cell theory - CORRECT ANSWER All cells come from existing cells (not Schwan
and Schleiden)
4-6 cell theory - CORRECT ANSWER 4. heredity info passed down through cells
5. all cells have basic chemical composition
6. cells possess metabolism (energy flow)
Koch's Postulates - CORRECT ANSWER germ theory of disease (what causes
disease)
Robert Koch - CORRECT ANSWER isolation of tuberculosis
Germ Theory of Disease (Koch's Postulates) - CORRECT ANSWER 1. organism
present in every case of disease, but not in healthy host
2. organism can be extracted from initial host and cultured on media
, 3. upon introduction of organism, host must acquire disease
4. organism isolated from newly infected host
(Mice experiment)
2 issues with germ theory - CORRECT ANSWER 1. can't culture most bacteria
outside of host
2. some organisms don't suffer from same pathogen (immune) Ex: covid
Alexander Fleming - CORRECT ANSWER discovered penicillin by accident (messy
lab-fungus eating bacteria); didn't become popular until WW2
Edward Jenner - CORRECT ANSWER Smallpox vaccine; (gave smallpox to boy); if
you expose someone to milder form of disease, they won't get as sick (vaccine);
china discovered smallpox first
Joseph Lister - CORRECT ANSWER Began using disinfectants and antiseptics during
surgery (carbolic soap; phenol); rate of infections dropped from 45% to 15%
1900's top causes of death - CORRECT ANSWER 1. Pneumonia
2. Tuberculosis
3. Diarrhea
-infectious diseases
1997 top causes of death - CORRECT ANSWER 1. heart disease
2. cancer
3. stroke
-people are living longer
1918 - CORRECT ANSWER spanish influensa
1990 - CORRECT ANSWER HIV
Emerging infectious diseases (EIDs) - CORRECT ANSWER disease that has been
recognized or more common within last 35 years
1. disease agents evolve
2. changes in society (people migrating)
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