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The most common number of carbons in fatty acid hydrocarbon chains of membrane phospholipids?
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∙ 10y ago
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∙ 10y ago
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Which part of the cell membrane non-polar and prevents the cell from dissolving?
Nonpolar fatty acid chains are nonpolar and prevent the cell from dissolving.
What are molecules with two fatty acid chains and a phosphate group that form biological membranes?
phospholipids
What makes phospholipid molecules uniquely suited to their role in membrane structure?
Phosopholipids have both a hydrophilic (water loving) and hydrophobic (water hating) region. This enables them to effectively make a barrier between the fluid inside and outside of the cell. The heads of phospholipids are hydrophilic - and so form the surfaces of the membrane, with their hydrophobic (lipid) tails facing inwards.
Molecules that form much of the cell membrane?
the cell membrane is made of a phospholipid bilayer. (complicated way of saying two layers facing each other. each layer is made of long chains of carbons attached to a phosphate group: see here for a good picture http://en.wikipedia.org/wiki/File:Cell_membrane_detailed_diagram_4.svg
The cell membrane is composed of two layers?
The lipid bilayer makes up the membrane of a cell. The lipid bilayer consists of opposing phospholipids, where the polar ends of both the top layer and the bottom layer of phospholipids face opposite directions.
What is the carbon content of kerosene?
Kerosene is comprised of multiple types of alkane (hydrocarbon) chains. These chains can vary between 6 to 18 carbons long. Cycloalkanes and aromatics (benzenes) are among kerosene's hydrocarbon constituents.
What are fats called at room temperature when they are solid?
the presence of double boned carbons in fatty acid hydrocarbon chains and the degree of packing of fatty acid chains.
What part of a cell membrane is hydrophobic?
Phospholipids
What is the phospholipids in the cell membrane composed of?
A phosphate group into fatty acid chains
What is the result when fatty acid is hydrolyzed?
Fatty acids are merely carboxylic acids with long hydrocarbon chains. The hydrocarbon chain length may vary from 10-30 carbons (most usual is 12-18). Fatty acids cannot be hydrolyzed further.
Is straight chain is more viscous than branched chain?
A straight chain hydrocarbon has two carbons that are bonded to only one other carbon (the terminal carbons). A branched chain hydrocarbon has more than two carbons that are bonded to only one other carbon (the terminal carbons at the ends of each branch). A cycloalkane (cyclic hydrocarbon) has no carbons that are bonded to only one carbon - the chain is hooked back to itself.
What is a double layer of phospholipids?
A cell's membrane (plasma membrane) is made of a phospholipid bilayer where the hydrophillic phosphate groups form the two outer sides of the bilayer and the hydrophobic fatty acid chains are the interior.
What is a hydrocarbon chain called when it is bent?
Bent hydrocarbon chains are called BRANCHED CHAIN.
What types molecules are present in cell membrane?
The cell membrane is composed of different kinds of molecules. The phospholipid chains surround the cell and is what the cell membrane is primarily made of. Around the cell, you can also find proteins embedded on or all the way through the cell. This protein helps large molecules from outside the cell or inside the cell to go in or out. Between the phospholipid is also cholesterol which helps the cell membrane fluidity. This all being said, there are three things that make up the cell membrane: # The phospholipid bilayer # The protein inside and outside the cell # cholesterol between some phospholipid chains.
What part of the cell membrane make up the phospholipid bilayer?
Phosholipids are composed of a glycerol backbone, 2 fatty acids, and a phosphate group. Two fatty acid chains are attached to the first 2 carbon molecules of the glycerol chain. The 3rd carbon of the glycerol backbone is attached to a phosphate group.
Which part of the cell membrane non-polar and prevents the cell from dissolving?
Nonpolar fatty acid chains are nonpolar and prevent the cell from dissolving.
Is short carbon chains of hydrocarbon easier to flow or long?
A hydrocarbon composed of short carbon chains will ignite more easily, just think how flammable petrol is!
