Question

Which of the following would you classify as nano-scale? a. An amoeba (a unicellular animal) b....

Which of the following would you classify as nano-scale?
a.
An amoeba (a unicellular animal)
b.
Grounded coffee
c.
A water molecule
d.
A cell membrane
e.
An ore of gold
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Answer #1

Ans.

As size of amoeba is the range of 250 - 750  m

Size of water molecule is 2.75 Å

Size of cell membrane is the range of 7.5 - 10 nm

Also , size of grounded coffee and ore of gold are higher than the above three

So , size of cell membrane lies in the nanometer(nm) scale or nano-scale

Therefore ,    d , A cell membrane   is classified as nano - scale  

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