Scelta multipla
Which group of molecules forms the core of all biological membranes?
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6. The Membrane
Biological Membranes
Scelta multipla
Which of the following correctly describes the structural organization of the cell membrane?
A
A rigid layer of carbohydrates and proteins
B
A phospholipid bilayer with embedded proteins
C
A single layer of phospholipids with proteins on the surface
D
A double layer of proteins with embedded phospholipids
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Understand that the cell membrane is primarily composed of lipids and proteins, which provide both structural integrity and functionality.
Recognize that the most accepted model for the cell membrane structure is the fluid mosaic model, which describes the membrane as a dynamic and flexible structure.
Identify the key components of the cell membrane: phospholipids and proteins. Phospholipids form a bilayer, which is the fundamental structure of the membrane.
Note that the phospholipid bilayer consists of two layers of phospholipids, with hydrophilic (water-attracting) heads facing outward and hydrophobic (water-repelling) tails facing inward.
Understand that proteins are embedded within this phospholipid bilayer, serving various functions such as transport, signaling, and structural support.
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