Test 1 Bio 113, Dr. Metzler, ball state university Exam | Questions And Answers Latest
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Types of Microorganisms - prokaryotes, eukaryotes, viruses(smallest)
Prokaryotes - -No nucleus
- bacteria
- cell membrane
- no organelles
Eukaryotes - -Cells that contain nuclei
- fungi and parasitic worms
Anton van Leeuwenhoek - made first simple microscope
abiogenesis (spontaneous generation) - The belief that certain nonliving materials can change directly
into living organisms
Redi - Person who demonstrated that maggots do not rise spontaneously from decaying meat
Needham - heated a nutrient broth then placed in a covered flask= microbial growth ("proved"
abiogenesis")
- didn't boil long enough and let air in
Spallanzani - Person who heated nutrients after being sealed, no microbes grew (support for biogenesis)
- didn't let air in and boiled longer than Needham
Pasteur - disproved spontaneous generation; used swan-necked flasks and let air in but not microbes
Hypothesis - testable prediction
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