Module 1 Exam Flashcards
(22 cards)
Who disproved the theory of spontaneous generation?
Louis Pasteur
What is the correct order of taxonomic ranks from broadest to most specific?
Domain > Kingdom > Phylum > Class > Order > Family > Genus > Species
Best microscope for internal structures of viruses?
Transmission electron microscope
One key feature of Gram-negative bacteria?
Outer membrane containing lipopolysaccharides
First person to observe microorganisms under a microscope?
Anton van Leeuwenhoek
Does the endosymbiotic theory claim mitochondria evolved from eukaryotes?
No, it claims they evolved from prokaryotes.
Is Staphylococcus aureus Gram-negative?
No, it is Gram-positive.
Do biofilms consist of individual non-communicating bacteria?
No, they are complex communities with communication.
What happens in an isotonic solution?
Water moves equally in and out of the cell.
Who developed pure culture techniques?
Robert Koch
Difference between taxonomy and phylogeny?
Taxonomy classifies organisms by traits; phylogeny shows evolutionary relationships.
Two differences between Gram-positive and Gram-negative cell walls?
Gram-positive has thick peptidoglycan and teichoic acids; Gram-negative has thin peptidoglycan and outer membrane with LPS.
Two evidences for RNA world hypothesis?
RNA can store genetic info and catalyze reactions (ribozymes).
Example of microbial mutualism?
E. coli in the gut provides vitamins and gets nutrients/shelter.
Three types of passive transport in prokaryotes?
Diffusion, facilitated diffusion, osmosis
Five prokaryotic cell parts to label?
Flagella, nucleoid, ribosomes, plasma membrane, peptidoglycan wall
Microscope parts to identify?
Ocular lens, objective lens, stage, light source, coarse focus knob
Who discovered penicillin?
Alexander Fleming
Who promoted hand washing to prevent disease?
Ignaz Semmelweis
Who developed the first vaccine?
Edward Jenner
Who traced a cholera outbreak to water?
John Snow
Who discovered streptomycin?
Selman Waksman
