Chemistry, 08.01.2021 14:00, aileenf598

3. When substances cross cell membranes by simple diffusion, they a. squeeze between phospholipid molecules.
b. have help from channel proteins.
C. move from a higher to lower concentration.
d. two of the above

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3. When substances cross cell membranes by simple diffusion, they a. squeeze between phospholipid m...