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phospholipid bilayer can consists of a phosphate group, gylcerol and 2 fatty acids. It is selectively permeable which means that it only allows certain molecules in and others out. Molecules that are allowed in are those that are small and polar meaning that both molecules have differents charges on them attracting them to each other. The structure of the molecule has 2 hydrophobic tails and a hydrphilic head. the head would be the the one to attach itself to the other molecule because it is polar. in other words the hydrophilic head will turn in the direction of the cell wall because of its polar ways and difference in charges between the two. and the tails would point inward to each other because they are hydrophobic so they would keep as far awat from water as possible and by turning to each other they are doing so. Hydrophobic means water hating/ afraid of water hydrophilic means water loving.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoA plasma membrane is a bilayer composed of phospholipids. These phospholipids have hydrophilic head which contains phosphate and glucose. Stemming from the head are two tails of fatty acids, monomers of lipids, and are hydrophobic. These tails bond with other tails from the phospholipids on the other side of the membrane and form one united membrane. The membrane is also studded with various enzymes that help transport things inside and outside of the cell. Carbohydrates usually stem from these enzymes and serve as indicators to other cells, which help cells identify each other.
Pretty much that first sentence is all you need to know, though. (:
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Which type of molecule is found in the plasma membrane?
The plasma membrane is composed mostly of phospholipids
Is the cytoskeleton in the plasma membrane?
No. It is attached to the plasma membrane though, which is important. The cytoskeleton gives cells shape and rigidity etc and so it is important for it to be attached to the plasma membrane. The cytoskeleton is composed of molecules that are located in the cytoplasm but that are attached to the plasma membrane via specific proteins. Hope that helps!
Are All eukaryotic cells have a plasma membrane composed of a lipid bilayer?
yes
What are proteins embedded in the plasma membrane called?
They are called integral proteins
What kind of membranes do human cells have?
The plasma membrane of eukaryotic cells are composed of a phospholipid bilayer.
Which type of molecule is found in the plasma membrane?
The plasma membrane is composed mostly of phospholipids
What is the semi permeable membrane composed of a phospholipid bilayer?
plasma
Is the cytoskeleton in the plasma membrane?
No. It is attached to the plasma membrane though, which is important. The cytoskeleton gives cells shape and rigidity etc and so it is important for it to be attached to the plasma membrane. The cytoskeleton is composed of molecules that are located in the cytoplasm but that are attached to the plasma membrane via specific proteins. Hope that helps!
Are All eukaryotic cells have a plasma membrane composed of a lipid bilayer?
yes
What are proteins embedded in the plasma membrane called?
They are called integral proteins
What kind of membranes do human cells have?
The plasma membrane of eukaryotic cells are composed of a phospholipid bilayer.
What part of the cell is composed mainly of a fibrous material called cellulose?
Plasma Membrane :D
This structure has been shown to be composed of three distinct zones or layers and is semipermeable?
plasma membrane
The plasma membrane has some interesting characteristics. What are they?
it is gel-like composed of proteins, lipids and carbs.
The area of the cell between the plasma membrane and nucleus where chemical reactions occur is the?
The cytoplasm is the region between the nucleus and the plasma membrane. This region is composed of cytosol, a jellylike fluid, and other components.
How does nutrients enter a cell?
The plasma membrane.
Which cell part is a thin membrane that lets materials in and out of a cell?
Referred to as either a cell membrane or a plasma membrane. Is composed of a phospholipid bilayer with embedded protein channels.
