Biology, 07.09.2019 02:20 kardav0435
Ascientist wants to examine living cells lining the respiratory tract to determine how the cells use tiny hairs to move dirt and mucus away from the lungs. which one of the following instruments would be best, and why?
a. a light microscope, because it allows observations of whole, live cells
b. a transmission electron microscope, because it has high resolving power
c. a transmission electron microscope because it is capable of very high magnification
d. a scanning electron microscope, because it can reveal structures on cell surfaces
e. a scanning electron microscope, because it can be used to observe whole cells without slicing them
Answers: 2
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Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.
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Ascientist wants to examine living cells lining the respiratory tract to determine how the cells use...
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