OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The cell membrane controls the nucleus. This is called selectively permeable.
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The cell membrane controls the ease with which substances pass into and out of the cell. This is called permeable.
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The cell membrane controls the ease with which substances pass into and out of the cell. This is called selectively permeable.
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The cell membrane controls the large organelles in the cell. This is called selectively permeable.
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The cell membrane controls something in the cell. This is called permeable.
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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 the cell membrane refers to the ability of the cell membrane to control the flow of substances in and out of the cell. It helps maintain a cell’s internal environment, and to regulate its internal conditions, such as osmotic pressure, pH, and ion concentration.
Detailed explanation-3: -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).