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The most common liquid volumes in molecular biology are measured in

  • A.ml
  • B.μl
  • C.nl
  • D.l

Answer: B

Correct answer: μl

Molecular biology works with tiny volumes, and the microlitre is the everyday unit - a PCR reaction is typically 20-50 μl, and micropipettes are calibrated in it. Millilitres are for buffers and media; nanolitres are below what a hand pipette can deliver reliably.

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