A Graduate Student Filtered a Liter of Seawater Using a Millipore

question 13

Multiple Choice

A graduate student filtered a liter of seawater using a Millipore filter membrane of 2 $\mu$ m pore size. Which of the following is true about her filtrate?

• A) It is sterile.
• B) Microplanktons are present.
• C) It contains picoplanktons.
• D) It contains nanoplanktons.
• E) None of the above.

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