The first step for directly linking a microbe to a specific disease according to Koch's postulates is to
A) culture the blood or other body fluid from a diseased animal using nutrient medium.
B) inject a sample of blood or other body fluid from a diseased animal into a healthy animal.
C) obtain a sample of blood or other body fluid from a diseased animal.
D) compare the blood of a sick animal to blood obtained from a healthy animal.
E) isolate microbes from the blood of healthy animals.
C
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Bacterial cultures with a large number of genetically identical cells are called:
a. clone cultures. b. equal cultures. c. simple cultures. d. identical cultures. e. fresh cultures.
A _____ is any objective evidence of a disease that can be observed or measured by an observer
Fill in the blank(s) with the appropriate word(s).
A derived character that is shared among two or more lineages is also called a(n) ________
A) apomorphy B) plesiomorphy C) synapomorphy D) clade
A short while after a person has died, a "gasp" of air may occur as the lungs collapse. This flow would represent the
Select one: a. tidal volume. b. expiratory reserve volume. c. total lung volume. d. vital capacity. e. residual volume.