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What else can I help you with?
Why are the outside heads of phospholipids located on the outside of the cell membrane?
Tails are Hydrophobic
In a plasma membrane how do the tails of the phospholipid molecules lineup?
they are sandwiched between two layers of heads
What are lipids with polar heads and nonpolar tails called?
Lipids with polar heads and nonpolar tails are called phospholipids. They are a major component of cell membranes, with the polar heads facing the aqueous environment and the nonpolar tails forming the interior of the membrane.
How do properties of lipid help explain the structure of a cell membrane?
Lipids have hydrophilic (water loving) heads, and hydrophobic (tails). Therefore, the tails face one another while the heads face out to the water. And if particles must pass through the cellular membrane that are hydrophilic they must go through protein channels within the cell membrane.
Where can you find a lipid bilayer in a cell?
A lipid bilayer can be found in the cell membrane, which surrounds the cell and separates its internal environment from the external environment. It is composed of two layers of lipid molecules arranged in a double layer with hydrophobic tails pointing inward and hydrophilic heads outward.
Which model did scientist develop to describe the cell membrane?
the cell is a phospholipid bilayer. this means that there are 2 layers of phospholipids with hydrophobic tails and hydrophilic heads.
What structure in a cell membrane repels charged particles?
The Hydrophobic phospholipid "tails." Cell Membranes are composed of lines of hydrophilic (water loving) phospholipid heads that face outside the cell and inside the cell. On the inside of the membrane, however, are hydrophobic (water hating) phospholipid tails, which repel charged particles.
What cell forms the thin membrane?
Well i think what you are asking is what forms the thin membrane of a cell. and that is a Phospholipid bilayer where the outside surfaces of the bilayer are hydorphilic (heads) and the inside of the bilayer is hydrophobic (tails).
What surrounds the cell and controls the movement of materials into and out of the cell?
Its the cell membrane (or plasma membrane), composed of phospholipid bilayer ,membrane proteins and cholesterol in eukaryotes. the regulation is largely by way of signalling molecules that interact with specefic receptors on the membrane (mostly proteins or glycoproteins). hope that helps Dr. David
What is meant by the fluidity of the cell membrane?
The cell membrane is made up of a phospholipid bi-layer (a phospholipid has a polar head, and two non polar tails). the membrane's structure makes it so that the heads are opposite each other, and their tails intertwine, so it look like this: ( ) ( ) ( ) ( ) ( ) <-- polar heads | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | <-- 2 non polar tails | | | | | | | | | | | | | | | | | | ( ) ( ) ( ) ( ) <-- the other side of the membrane (polar heads) the spaces that the tails create keep the membrane's fluidity.
Where are the cell membranes located in the places where no cells are?
That makes... No sense. How can a cell membrane be there when there is no cell? Okay, well, I'll just tell you the gist of what a cell membrane consists of: It has a phospho-lipid bi-layer with hydrophilic phosphate heads and hydrophobic tails. Heads are polar, tails are nonpolar. Um... obviously, it's a membrane, meaning it's on the outside of the cell. It's semi-permeable with both active and passive transport proteins allowing passage.
These form the cell membrane by lining up tails-to-tails in a double row?
Phospholipids form the cell membrane by aligning their hydrophobic tails in a double layer known as the lipid bilayer. The hydrophilic phosphate heads face outward towards the aqueous environment inside and outside the cell. This structure provides a selectively permeable barrier that regulates the movement of substances in and out of the cell.
