⟩ What do biomass pyramids represent?
Biomass pyramids represent the sum of the masses of the individuals that participate in each tropic level of a food chain.
Image Diversity: biomass pyramids
Biomass pyramids represent the sum of the masses of the individuals that participate in each tropic level of a food chain.
Image Diversity: biomass pyramids
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
"Parfocal" refers to microscopes with multiple objectives where A) objectives are used in pairs for stereoscopic effects. B) each objective has the same working distance above the specimen. C) each objective is positioned to be in focus at the same stage height. D) sequential objectives increase power by a factor of two.
Which of the following is NOT equivalent to 10 micrometers. A) 0.0001 cm B) 0.01 mm C) 10,000 nm D) 100,000 Angstroms