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hessar3 hessar3
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6 years ago
The difference between active transport and passive transport is that
 a. concentration gradients are involved in one and not in the other.
  b. glycolipids play a role in one and not in the other.
  c. one requires expenditure of energy by the cell and the other does not.
  d. ions are transported into and out of the cell by one process and not by the other.
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