THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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to control which substances enter and leave the cell
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to perform different functions in each cell
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to form a hard outer covering for the cell
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Detailed explanation-1: -The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Detailed explanation-2: -The selective permeability of biological membranes to small molecules allows the cell to control and maintain its internal composition. Only small uncharged molecules can diffuse freely through phospholipid bilayers (Figure 2.49).
Detailed explanation-3: -Answer and Explanation: The cell structure which is largely responsible for controlling the entry and exit of substances into or out of the cell is the plasma membrane.