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What is the membrane that surrounds the cells?
this is the cell membrane made primarily of lipid molecules with proteins incorporated into it that aid in transport of molecules across the membrane
Are lipid droplets membrane bound?
The membrane the surrounds the droplets 'in question' is made up from lipids. A single layer of lipid molecules surrounds a 'micelle', whereas a double lipid layer forms a membrane.
A lipid that forms the framework of a cell membrane?
It is called a "phospholipid bilayer". Its made of molecules containing a hydrophilic phosphate head on one side and a hydrophobic lipid hydrocarbon tail on the other. There are essentially two layers of these molecules with the tails facing each other and the heads facing lining the interior and exterior of the cell.
What molecules won't diffuse passively across a membrane?
Larger molecules, such as glucose. The cell membrane is made up of phospholipid molecules, which are phosphate "heads" with two lipid "tails". Since the lipid tails are nonpolar, and thus hydrophobic (do not dissolve in water, and are repelled), polar molecules, like water, cannot pass through the membrane. Certain small, nonpolar molecules like oxygen and carbon dioxide can fit through without the use of energy. Large molecules and some ions (for example, Na+ and K+ in the sodium-potassium pump) are drawn into the cells by carrier proteins, possibly up the concentration gradient, which requires energy.
Are viruses made of protein and lipid membranes?
A virus particle is composed of a nucleic acid that is surrounded by the capsid (which is the protective layer that is made out of protein). Some viruses can have lipid envelope however, not all viruses have a lipid envelope.
Are triglycerides lipids?
Triglycerides are lipids in a way. A lipid is a broad category of macromolecules. In this category is fatty acids. One triglyceride consists of a glycerol back bone and 3 fatty acids. Doing this is a way for your body to store fatty acids. So Yes, in a way a triglyceride is a lipid, but don't forget that the category "Lipid" is made up of other molecules as well.
What is lipid bilayer?
thin membrane made of two layers of lipid molecules.
What is the cell made of?
The cell membrane is made of carbohydrate, lipid, and protein molecules.
What are Fat or lipid molecules mostly made of?
Carbon hydrogen oxygen
Is a lipid an organelle?
a lipid is in fact not an organelle it is one of of the four molecules of life and is made by the smooth endoplasmic reticulum ,ER
Is lipase a lipid?
Enzymes are made from amino acids, so they are proteins
What kind of molecules are wax and testosterone?
hydrophobic molecules. Testosterone is a hormone made of sterol.
Is lipid made from organic molecules?
It's based on carbon, so yep.
Which macromoleculesare are often made of three fatty acids bound to a glycerol molecules?
Lipid.
Why can only molecules that are fat soluable permate a cell membrane?
The cell wall itself is made of lipid. To be more precise, the cell membrane is made of a bilayer of phospholipids. The hydrophobic fatty acid tails prevent water-soluble molecules passing through, but allow the transport of lipid-soluble molecules.
What is the membrane that surrounds the cells?
this is the cell membrane made primarily of lipid molecules with proteins incorporated into it that aid in transport of molecules across the membrane
Are lipid droplets membrane bound?
The membrane the surrounds the droplets 'in question' is made up from lipids. A single layer of lipid molecules surrounds a 'micelle', whereas a double lipid layer forms a membrane.
