A scientist 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 of the following instruments would be best,and why?
A) a scanning electron microscope,because it can be used to observe whole cells without slicing them
B) a light microscope,because it allows observations of whole,live cells
C) a scanning electron microscope,because it can reveal structures on cell surfaces
D) a transmission electron microscope,because it has high resolution
Correct Answer:
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