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A cell membrane is a...?
A. Rigid structure that encloses, supports, and protects the cells of plants, algae, fungi, bacteria
B. Organelle in plant cells used to perform photosynthesis
C. Organelle in animal and plant and animal cells used to process energy
D. Selectively permeable part of the cell that controls what enters and exits the cell
What is a Selectively permeable part of the cell that controls what enters and exits the cell?