GENERAL ANATOMY
CELLULAR ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It provides a rigid support that provides structure for the entire organism.
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It contains small openings that can store water the cell needs to survive.
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It carries signals from one cell to the next, allowing cells to work together.
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It allows for the passage of certain substances into and out of the cell.
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Detailed explanation-1: -The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Detailed explanation-2: -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.
Detailed explanation-3: -Because of the hydrophilic and hydrophobic regions of the phospholipid bilayer, small nonpolar molecules cross the membrane easily, while large and hydrophilic molecules cannot cross easily.
Detailed explanation-4: -The principal components of the plasma membrane are lipids ( phospholipids and cholesterol), proteins, and carbohydrates. The plasma membrane protects intracellular components from the extracellular environment. The plasma membrane mediates cellular processes by regulating the materials that enter and exit the cell.
Detailed explanation-5: -The fundamental structure of the membrane is the phospholipid bilayer, which forms a stable barrier between two aqueous compartments.