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Warriorz13:
A cell is a complex system. Like most systems, a cell contains a boundary that separates things that are inside the system from those that are outside of the system. Which part of the cell functions as a system boundary? A) cytoplasm B) membrane C) nucleus D) ribosome
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Warriorz13:
@theDeviliscoming
theDeviliscoming:
B
SkyVoltage43:
yep
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