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Biology 20 Online
OpenStudy (anonymous):

A complex barrier of lipid molecules separating the cell from its external environment is located in which of the following? A. Cytoplasm B. Cell membrane C. Nucleus D. Cell wall

OpenStudy (somy):

what do u think?

OpenStudy (somy):

the hint in the question is `barrier of lipid molecules`

OpenStudy (anonymous):

It's already in the question what consists of phospholipid molecules?

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