I don't know sorry
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A membrane that allows only some materials to move in and out of the cell is B. Semipermeable.
A cell theory.
Since cells are the basic unit of structure in all organisms and also the basic unit of reproduction.
The greater the amount of active transport carried out by a cell, the greater the amount of mitochondria would be found in the cell.
Active transport uses energy. Mitochondria undergoes aerobic respiration to release large amounts of energy. If the cell is found to be lacking in energy needed for active transport, the cell would adapt by synthesizing more mitochondrion to ensure that it's demand of energy is met.
