Table of Contents
How are phospholipid molecules oriented in the plasma membrane of a cell?
The phospholipids in the plasma membrane are arranged in two layers, called a phospholipid bilayer, with a hydrophobic, or water-hating, interior and a hydrophilic, or water-loving, exterior. Each phospholipid molecule has a head and two tails. 2 shows a single phospholipid next to a phospholipid bilayer.
How would the phospholipid molecules be oriented?
The head (polar region) of each phospholipid molecule is oriented towards the exterior of the bilayer. The tail (nonpolar region) of each phospholipid molecule is oriented towards the interior of the bilayer. This orientation is due to the hydrophobic effect.
How does the orientation of the phospholipids in the bilayer allow a cell to interact with its internal and external environments?
The orientation of the phospholipids in the bilayer allows a cell to interact with its internal and external environment because Polar hydrophilic heads are on the outside the cell and nonpolar hydrophobic heads inside of the cell. products such as digestive enzymes or hormones (exists the cell).
Which statement best explains orientation of the phospholipid molecules in this model?
Which statement best explains the orientation of the phospholipid molecules in this model? B.) The hydrophilic phosphate groups of the phospholipid molecules are attracted to the aqueous internal and external environments. Correct.
How are phospholipids arranged or oriented in micelles?
If a drop of phospholipids are placed in water, the phospholipids spontaneously forms a structure known as a micelle, with their hydrophilic heads oriented toward the water. Micelles are lipid molecules that arrange themselves in a spherical form in aqueous solution.
Which statement best explains the orientation of the phospholipid molecules in this model?
Why do the phospholipids arrange themselves in this orientation?
It’s just that the hydrophilic head carries a charge, which causes it to be polar, and as such, will interact with water molecules (which are also polar). When exposed to the water, the phospholipid bilayer spontaneously self-assembles.
How are phospholipid molecules arranged within the lipid bilayer of the plasma membrane?
The phospholipids in the plasma membrane are arranged in two layers, called aphospholipid bilayer. As shown in Figure below, each phospholipid molecule has a head and two tails. The head “loves” water (hydrophilic) and the tails “hate” water (hydrophobic).