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4.4 Study of osmosis in living plant cells
Watch the video and then answer the following questions.
1. Which of the following explains why epidermal cells of red onions are used in this practical?
A. They are plant cells.
B. Water molecules can cross the plant cell walls freely.
C. The red pigment in these cells can cross the cell membrane via channel proteins.
D. The red pigment in these cells allows us to observe changes in these cells easily.
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