Biology

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Human vision can distinguish objects down to about a 4th of a millimeter (~250 micrometers). Given this, which of the following are generally visible to the human eye?
Proteins
Bacterial cell
Animal cell
Poxvirus
Ribosomes
Plant cell
None of the above

I think none of the above...

  • Biology -

    Plant cell

  • Biology -

    None of the above is right.

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