Cells, like bacteria and archaea, that do not have a nucleus in their cells have traditionally been called____.
A. pathogens
B. prokaryotes
C. eukaryotes
D. decomposers
E. fermenters
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Which activity is an example of biotechnology?
A. Egyptians using moldy bread on wounds
B. Escherichia coli producing human insulin
C. A microbiologist using the microscope to study bacteria
D. Bacteria in the soil secreting an antibiotic to kill competitors
E. Public health officials monitoring diseases in a community
Which type of microscope does not use light in forming the specimen image? A. bright field B. dark field C. phase contact D. electron E. fluorescenceelectronNewly inoculated cultures must be _____ at a specific temperature to encourage growth A. incubated B. streaked C. contaminated D. poured E. All choices are correctincubatedWhat type of isolation technique is most effective for the majority of applications? A. pour plate B. streak plate C. spread plate D. culture plate E. Loop dilutionsteak plateThe term that refers to the purposeful addition of microorganisms into a laboratory nutrient medium is _____. A. immunization B. contamination C. inoculation D. infection E. isolationincoluationFor which bacterial genus does mannitol salt agar differentiate between species? A. Neisseria B. Staphylococcus C. Streptococcus D. Escherichia E. SalmonellaStaphylococcusThe purpose of staining cells on a microscope slide is to ________. A. secure them to the slide B. see motility C. kill them D. add contrast in order to see them better E. enlarge the cellsadd contrast in order to see them betterWhat do the Gram stain, acid-fast stain, and endospore stain have in common? A. The outcome is based on cell differences. B. They use heat to force the dye into cell structures. C. They are used on a wet mount of the specimen. D. They are simple stains. E. They use a negative stain technique.The outcome is based on cell differences.The correct microbiological term for the tiny sample of specimen that is put into a nutrient medium in order to produce a culture is the _____. A. inoculum B. loop C. incubator D. colony E. streakinoculumA pure culture contains ________. A. only one species of microorganism B. a variety of microbes from one source C. a variety of species from the same genus D. only bacteria E. None of the choices are correctonly one species of microorganismThe Five I's of studying microorganisms include all of the following except _____. A. incubation B. identification C. isolation D. infection E. inoculationinfection