Identification of bacteria in the laboratory usually begins with the ________ for placement in one of two large groups of bacteria
A) Koch's stain
B) Gram stain
C) Pasteur fermentation test
D) Petri stain
E) Ehrlich magic test
B
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Basic microbiology can be used to
A) probe the fundamental processes of life. B) study characteristics of cells of multicellular organisms. C) model our understanding of cellular processes in multicellular organisms, including humans. D) probe the fundamental processes of life, study characteristics of cells of multicellular organisms, and model our understanding of cellular processes in multicellular organisms, including humans.
What is vertical transmission of viruses?
a. an infection transferred between species b. an infection transferred from plant to plant c. an infection inherited from a parent organism d. an infection caused by mutated proteins
If biologists consider Ensantina klauberi and Ensatina eschscholtzii to be different species, they would likely argue that postzygotic isolating mechanisms had reinforced speciation.
a. true b. false
Horses and donkeys mate successfully to produce mules, which are always sterile. Which genetic isolating mechanism is involved here to prevent horses and donkeys from becoming a single species?
A) gametic isolation B) hybrid infertility C) behavioral isolation D) mechanical isolation