In a numeric pyramid the base corresponds to the first tropic level, i.e., to the producers. The top level of the pyramid corresponds generally to the last consumer order of the food chain (since the number of individual decomposers, most of them microorganisms, is too large to be represented).
Image Diversity: decomposers
Acid fast stains interact with the waxy structures of the cell wall of Mycobacterium species. A) True B) False
Fluorescence microscopy may be used with specially stained antibodies to detect specific microorganisms. A) True B) False
Fluorescence microscopy must be done on fixed and stained microorganisms. A) True B) False
Darkfield microscopy is best for visualizing live, motile microorganisms. A) True B) False
Objective lenses with higher magnification generally have a shorter working distance. A) True B) False
The fluorescence microscope has become an essential tool in medical microbiology to identify bacterial pathogens. A) True B) False
Microscope resolution increases as the wavelength of radiation used to illuminate the specimen decreases. A) True B) False
Even on the best light microscopes, increasing total magnification beyond 1500 cannot result in better resolution of the image. A) True B) False
Differential Interference Contrast microscopy A) compares two identical specimens on the same microscope. B) illuminates the specimen with light of two different colors. C) illuminates the specimen with light of two different phases. D) illuminates the specimen with both reflected and transmitted light
In a compound microscope, the primary image is formed by an objective lens and enlarged by the optical lens to reveal a virtual image. A) True B) False
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