All of the following are characteristics of spread plates EXCEPT
A. spread plates that readily grow anaerobic bacteria.
B. spread plates that are typically inoculated with a bent glass rod.
C. specimens that are typically diluted prior to inoculation of a spread plate.
D. colonies that grow on the surface of the agar.
Answer: A
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Which of the following is an important consequence of the evolution of diatoms and coccolithophorids?
A. They dominated photosynthesis in the oceans. B. The silica and calcium carbonate contained in these organisms became a primary source of carbonate sediments on the seafloor. C. They produced respective "blooms" in the ocean. D. They led to the extinction of cyanobacteria. E. None of these answer options is correct.
Dr. Ratard was trying to determine the cause of a mysterious epidemic affecting fish in the gulf of New Mexico. His proposal that the deaths were caused by an organism called a protist is considered a(n)
A. experiment. B. hypothesis. C. data set. D. conclusion. E. theory.
Fixed smears of specimens are required in order to perform the Gram stain and endospore stain on the specimens.
Answer the following statement true (T) or false (F)
Please match the following nutritional types with the statements that most accurately describe them, to test your understanding of the main categories of nutritional types among organisms.
Phototroph A) An organism that uses inorganic carbon dioxide as its carbon source B) An organism that must obtain its carbon in an organic form C) An organism that gains energy from chemical compounds D) An organism that acquires energy from light