THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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regulating the movement of molecules from one side of the membrane to the other side
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undergoing constant death and rebirth
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using protein pumps only
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heating and cooling
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Detailed explanation-1: -As a thin, semi-permeable substance, the cell membrane lets some things pass through into the cell while keeping others out. The cell membrane is extremely important for keeping the cell safe. Because the cell membrane has a semi-permeable structure, it also gives a bit of shape to the cell.
Detailed explanation-2: -The major component of cell membranes is phospholipids. Phospholipids are a type of lipid that makes up the cell membrane. Phospholipids are amphipathic, meaning they have both hydrophobic parts, which do not readily mix with water, and hydrophilic parts, which mix with water.
Detailed explanation-3: -The plasma membrane (cell membrane) forms a barrier between the cytoplasm inside the cell and the environment outside the cell. It protects and supports the cell and also controls everything that enters and leaves the cell. It allows only certain substances to pass through, while keeping others in or out.
Detailed explanation-4: -The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.