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BIOS 2320- Exam 1 questions with 100% correct answers rated A+ passed
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BIOS 2320- Exam 1 questions with 100% correct answers rated A+ passed
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BIOS 2320- Exam 1The theory that organisms can arise from nonliving matter is called:
a. biogenesis
b. spontaneous generation
c. cell theory
d. the theory of evolution - correct answer ✔✔b. spontaneous generation
Who was the first person credited with visualization of bacteria with a simple light microscope?
a. Louis Pasteur
b. John Tyndall
c. Anthony van Leeuwenhoek
d. Robert Koch - correct answer ✔✔c. Anthony van Leeuwenhoek
Which type of cell would you expect to be much larger than the others:
a. a liver cell from a dog, a eukaryotic animal species
b. E coli, a bacterial species
c. Methanosarcina thermophila, an archaeal species
d. no difference in the expected size of all three cell types - correct answer ✔✔a. a liver cell from a dog,
a eukaryotic animal species
Which of the following experimental requirements was necessary for Pasteur to disprove spontaneous
generation?
a. provide a nutrient source that would support microbial growth
, b. providing air
c. heating the flask to kill any microorganisms that were initially present in the broth
d. preventing airborne microorganisms from entering the flask - correct answer ✔✔d. preventing
airborne microorganisms from entering the flask
Which historical period represents the Golden Age of Microbiology, where many key discoveries were
made by various scientists, such as the development of pure culture techniques to grow and characterize
microbes?
a. 1500-1300 BC
b. 1676-1796
c. 1857-1911
d. 1918-1973 - correct answer ✔✔c. 1857-1911
Which type of microbe accounts for the differences observed by John Needham, Father Spallanzani,
Louis Pasteur, and others in experiments, such as spontaneous generation with "sterile: broths enclosed
in flasks?
a. airborne bacteriophage viruses
b. contamination by staphylococcus species bacteria present on human skin
c. the presence of eukaryotic mold and fungus spores in some broth extracts
d. heat-resistant bacterial endospores that are not killed by short boiling times - correct answer ✔✔d.
heat-resistant bacterial endospores that are not killed by short boiling times
Which scientist discovered and characterized the first antibiotic (penicillin) in the 1920-30's?
a. Robert Koch
b. Alexander Fleming
c. Louis Pasteur
d. Joseph Lister - correct answer ✔✔b. Alexander Fleming
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