Cell biologists employ targeted fluorescent dyes or modified fluorescent proteins in both standard fluorescence microscopy and confocal microscopy to observe specific details in the cell
Even though fluorescence permits better visualization, the resolving power is essentially the same as that of a standard light microscope because the resolving power of a microscope is limited by the __________ of light.
(a) absorption
(b) intensity
(c) filtering
(d) wavelength
(d)
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A hypothetical automobile has 100 parts that are to be assembled by four workers. During the car's assembly, each worker constructs 25 parts individually, and then the four resulting components are assembled together. The manner in which the car was assembled is much like which cellular strategy?
A) hierarchical assembly B) renaturation C) electrostatic assembly D) self-assembly E) assisted self-assembly
A layer of lipoprotein and glycoprotein that covers the outer surface of some viruses is the
A. capsid. B. casing. C. envelope. D. membrane. E. viroid.
Water and minerals can move from one cell to another in the intracellular pathway through the
A. Casparian strip. B. guard cells. C. companion cells. D. plasmodesmata. E. stomata.
A classic example of imprinting is _____
a. Pavlov’s dog b. a sparrow singing a song c. Lorenz and his geese d. a cuckoo bird being a “brood parasite” e. watching television