what is a cell membrane more like?
966437
It's the door to the cell with a doorman in charge.\n\nThe cell membrane lets good things in, it keeps the bad things out, and it expels the waste.  Just like a good doorman would.\n\nThe doors are the permeable points on the cell membrane and the doorman sits inside the nucleus so he can control all the various doors.\n\nWhen a bacterium attacks it wages war on the cell and fights from the outside trying to break the cell membrane and storm the doors.\n\nWhen a virus attacks the cell the virus sendsa few of its agents inside, they knock out the doorman and allow more of the virus code in.  Once enough of these agents get inside they hijack the nucleus and later the entire cell.
762656
D - definitely all of these:\n\nA - TRUE: liposomes are shaped like a donut, in which the membrane is a lipid bilayer\nB - TRUE: by definition, liposomes contain an aqueous core; if the core is empty, they are called micelles\nC - TRUE: The heads are hydrophilic, the tails are hydrophobic.
977456
All are found in A) the cell membrane. \n\nThe cell membrane is made up of a phospholipid bi-layer that is dotted with proteins, markers, ion channels and receptors (which are also protein based).  The receptors/channels/markers all either identify the cell or allow things to pass in/out of it,  or allow things to attatch.  If they were anywhere else, it wouldn't make sense.\n\nSo your answer is A
849803
cell walls give structure.
529163
A plasma membrane or cell membrane or plasmalemma structured bilayer of phospholipid and protein molecules.\nThe basic composition and structure of the plasma membrane is the same as that of the membranes that surround organelles and other subcellular compartments. The foundation is a phospholipid bilayer, and the membrane as a whole is often described as a fluid mosaic – a two-dimensional fluid of freely diffusing lipids, dotted or embedded with proteins, which may function as channels or transporters across the membrane, or as receptors. \n\n"The model was first proposed by S.J. Singer (1971) as a lipid protein model and extended to include the fluid character in a publication with G.L. Nicolson in "Science" (1972)."
813729
plasma membrane-bouncer or security\ncell wall-Berlin Wall\nmitochondria-power plant\nER-Ups of the cell\nlysosome-decomposers\nvacuole-water and septic tank\nchloroplast-dye
233869
You're probably referring to the plasma membrane. The interior is hydrophobic, while the exterior is hydrophillic. The phospholipids can translocate horizontally within the bilayer, but can't cross from one layer to the other. So, the membrane behaves like a fluid.  See MIT's website for more info. the link is below
252836
The cell membrane regulates what comes in and what leaves the cell....it kind of acts like a filter!
884099
cell wall - a thick, rigid membrane that surrounds a plant cell. This layer of cellulose fiber gives the cell most of its support and structure. The cell wall also bonds with other cell walls to form the structure of the plant.\n\nYou will find the rest here --> http://www.enchantedlearning.com/subjects/plants/cell/
891803
A cell would have the most entropy since it has a lot of different things inside of it that can be arranged in different ways.
44587
That depends on the type of cell and its function.
420599
Human cells and animal cells are very similar. Actually, human cells are types of animal cells. Every different tissue in your body is made up of different kinds of cells. They may have different structures, especially in their cell membrane, which make the function of that cell different. Therefore they do have similar functions, depending on their structure and characters.
264821
These differences are down to cellular level:\n\nEUKARYOTES:\n--Relatively bigger compared to prokaryotes \n--Have true nucleus (surrounded by nuclear envelope)\n--Cells contain golgi, lysosomes, ribosomes and endoplasmic reticulum\n--Have cell wall made of cellulose and chitin\n--Have linear DNA with protein forming true chromosomes\n--Have a nucleolus\n--Their flagella consist of microtubules\n--Membrane-bounded organelles like chloroplast present\n\nPROKARYOTES:\n--Relatively smaller in size\n--Don't have a permanent nucleus\n--Their cells contain ribosomes, but no vacuole or golgi\n--Cell wall is rigid and made up of murein\n--Have circular DNA, with no true chromosomes\n--No nucleolus present\n--Their flagella lack microtubules\n--No membrane bounded organelles present
744514
Yes, both plant and animal cell have cell membrane. And remember without this, the onion and other things that you eat will be full of germs inside of it. And remember, cell Wall are fully permeable, they let everything pass through.
833121
A cell membrane keeps separates the inside and outside of the cell.   It can also regulate what can enter the cell and what can't.
528998
Yes.  The term'subcellular" would just mean it is comprised of peices smaller than a cell.\n\nThe term 'components' is simply a word for parts used for assembly.  \n\nMost of these parts are an integral part of the cell, meaning if you get rid of them you lose the cell.
120491
As the name implies it is outer thin layer of a LIVING cell.In plant cells in addition to the cell membrane there is a cell wall,either of cellulose or lignin,which is the external most, protective covering.The cell membrane controls the entry and exits of molecules in side the LIVING cell from out side.The cell wall provides protection and gives shape to the cell, both living as well as dead.What we call wood is a collection of billions of dead plants cells that have strong lignified walls.\nAnimal cells lack a proper cell wall.\nOne can easily see a cell membrane with naked eyes. Take a hard boiled poultry egg. Gently crack and remove the outer SHELL which  is of calcium carbonate.Just on its inner side and coverig the WHITE of the egg ( which is now hard and firm) one is sure to find an extermely thin membrane.That is the CELL MEMBRANE! One can see it in afresh egg as well but for a first timer boiled egg is easier. Cell membrane is also called PLASMA MEMBRANE, as it forms the outer limits of the living cytoplasm of a cell.\nThe information above will make one believe that an egg is a cell. Yes it is true in all its aspects. It IS a CELL and since it has to survive out side the animal body, it is provided with a shell which is not a part of the cell.Poultry egg, or for that matter any egg is a cell. An ostrich's egg is the largest cell of all!.