Submitted by admin on Fri, 04/18/2014 - 12:34
definition:
The colorless material comprising the living part of a cell, including the cytoplasm, nucleus, and other organelles
sentence:
It was eventually realized that the culprit was a non-cellular form of ‘life’ that could diffuse through the cell walls and membranes into the cell's protoplasm.
difficulty:
hard
toefl frequency:
1
toefl classification: