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Phospholipids have polar and nonpolar ends. The polar ends face the outside of the cell or inwards towards the cytoplasm and the non polar lipid parts face toward the inside of the lipid bilayer of the membrane. Most phospholipids are made of a glycerol molecule attached to two fatty acids and a phosphate group. (Some phospholipids do not use glycerol and instead use a ceramide.) The phosphate group can be attached to inositol, choline, ethanolamine, and glucose. When attached to glucose it can form a lipid-carbohydrate anchor for carbohydrates that stick off of the cell membrane. Phosphoinositol is used in an important signaling pathway for cells by breaking down into diacyglycerol and phophoinositol phosphate. Also one of the fatty acids attached to phosphoinositol is arachidonic acid which is removed from phosphoinositol in order to make prostaglandins and leukotrienes. Hope that helps.
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What part of the cell is describe as semi permeable?
The Cell Membrane also known as the plasma membrane
Which cell organelle synthesizes the lipids that make up the bulk of cell membranes?
The cell membrane is a lipid bilayer, composed of phopholipids: A glyerol molecule with two fatty-acid groups at one end and a phosphate group at the other.Phospholipids are synthesised in the cytoplasm next to the endoplasmic reticulum. The ER sythesthies the lipids, and contains enzymes that catalyse the production of phopholipids such as Glycerol-3-phosphate acyltransferase. The phospholipids produced migrate naturally to the internal face of the membrane, and flippase moves them to the outer face.
Describe the general characteristics of a composite cell?
nucleus, cytoplasm, cell membrane.
Describe the structure of a cell membrane-?
The out side of all animal cells. because all the plant cells have a cell wall outside them and after the cell wall there is the cell membrane.its is not completely visible by the microscope. SZK
How would you describe the job of cell membrane?
The cell membrane is a a barrier between the inside structures of the cell and it's surrounding environment. The cell membrane also controls what comes into the cell and what goes out of it.
2 layers of these form much of the cell membrane?
A double layer, known as a bilayer, of phopholipids forms the main part of the cell membrane.
Describe the location of the cell membrane?
Cell Membrane is located inside the cell wall
What part of the cell is describe as semi permeable?
The Cell Membrane also known as the plasma membrane
How is the cell membrane of Achaea different?
They phopholipids have an ester link between glycerol and the fatty acid chain instead of the prokaryotic ether link. This makes it less fluid at extreme temps.
Describe the purpose of the cell membrane?
the cell membrane keeps the stuff needed inside the cell in, and the stuff needed outside the cell out
Describe the cell membrane of eukaryotic cellsexplain the importance and how the cell membrane worksbe sure to include examples?
A Cell membrane is something you cant know
What cell part is used to describe the outer edge of a frog blood cell?
Cell membrane
Describe how the body gets rid of cell waste?
Vacuoles merge with the cell membrane and then open
Which cell organelle synthesizes the lipids that make up the bulk of cell membranes?
The cell membrane is a lipid bilayer, composed of phopholipids: A glyerol molecule with two fatty-acid groups at one end and a phosphate group at the other.Phospholipids are synthesised in the cytoplasm next to the endoplasmic reticulum. The ER sythesthies the lipids, and contains enzymes that catalyse the production of phopholipids such as Glycerol-3-phosphate acyltransferase. The phospholipids produced migrate naturally to the internal face of the membrane, and flippase moves them to the outer face.
Describe the funtion of the cell membrane?
to keep the fluids of the cell from getting out
Describe the water molecules move through the cell membrane during osmosis?
Describe how water molecules move through the cell membrane during osmosis?
Describe the general characteristics of a composite cell?
nucleus, cytoplasm, cell membrane.
