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Movement of water rather than a solute through a cell membrane is called?
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∙ 15y ago
osmosis
Wiki User
∙ 15y ago
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Why is the membrane referred to as a fluid mosiac?
It is called that because the membrane is rather loose and moves easily since is a lipid. It is stabilized somewhat by cholesterol molecules (in animals cells only). The mosaic just means that there is more than one thing that makes up the membrane. Besides the cholesterol molecules there are various proteins embedded in the membrane as well.
What type of molecule makes up the bi-layer of a cell membrane?
This membrane is called the fluid mosaic model as it is a mixture of phospholipids, cholesterol, proteins and carbohydrates. Most of the membrane is composed of phospholipid molecules. These allow the membrane to be rather fluid.Embedded in this membrane are proteins which give some structure to the membrane. The 3rd components are proteins or glycolipids. Cholesterol is also found in the membrane. It prevents lower temperatures from inhibiting the fluidity of the membrane and prevents higher temperatures from increasing fluidity.
Why is the cell membrane said to be a fluid mosaic?
Generally water and gases are described as fluid. In this context cell membrane is said to have a fluid mosaic model just because of it super flexible nature. Lipid bipolar molecules in the cell membrane can exhibit a flip flop movement. It can easily reseal after any breakage. So as fluid have an ease in changing their orientation likewise cell membrane posess a similar property. shankha LOL
What is the thin flexible barrier around the cell is called?
Cell wall
What is prokaryotic DNA called?
Within prokaryotes, the DNA simply exists as a loop contained only by the cell membrane. Prokaryotes are very simple; they've DNA, ribosomes, all immersed in cytoplasm; a cell membrane and cell wall(s) to keep it in. They don't have the structural complexity of a distinct cell nucleus.
Why is it called osmosis rather than diffusion?
Diffusion is the spreading of something more widely. While osmosis is when molecules pass through a semi-permeable membrane into a more concentrated solution.
How does oxygen get in and out of plasma membrane?
Oxygen, O2, is a small enough molecule that it diffuses diwn it's concentration gradient into the cell and rather easily foes through the plasma membrane. Many small molecules can do this.
What is the membrane called in the grana?
The thylakoid (granum) lipid bilayer shares characteristic features with prokaryotic membranes and the inner chloroplast membrane. Thylakoid membranes are richer in galactolipids rather than phospholipids.
Why is mass movement of mud called flow?
When mud is involved in a mass movement it behaves as a liquid, flowing downhill and looking rather like a muddy flood.
Why is a mass movement of mud called a flow?
When mud is involved in a mass movement it behaves as a liquid, flowing downhill and looking rather like a muddy flood.
What do bacteria have instead of a nucleus?
By saying nucleus, we mean that the DNA is contained in a membrane structure, that we call the nuclear membrane. However in prokaryotes (bacteria are examples!) the nucleus is not contained in a membrane structure. On the contrary, the DNA is rather suspended inside the cytoplasm itself in a compact form and is called a nucleoid.
Where is the rough endoplasmic recticulum in the cell?
The RER is a rather large organelle and it is next to the nuclear membrane and the cellular membrane.
Why does absorption of a membrane increase with temperature?
This is a very simple question with rather a complication set of answers. Movement of some molecules or substances across a membrane only increases between the temperatures of 1 to 37 degrees Celsius (in most organism/cellular systems). At temp. greater than 37 Celsius the membrane proteins involved in transport become denatured. One has to consider the main processes of movement of substances across a membrane i.e ranging from passive diffusion and osmosis and including active transport systems and end/exocytosis etc.
Why is the membrane referred to as a fluid mosiac?
It is called that because the membrane is rather loose and moves easily since is a lipid. It is stabilized somewhat by cholesterol molecules (in animals cells only). The mosaic just means that there is more than one thing that makes up the membrane. Besides the cholesterol molecules there are various proteins embedded in the membrane as well.
What is known In art a structure known for having moving parts is called a what?
Kinetic art is art from any medium that contains what the viewer perceives as movement. There does not have to be real movement but rather an optical illusion.
Why does saltwater dehydrate you rather than regular water?
it's due to something called osmosis. If you have salty water on one side of a permeable membrane and less salty water on the other - then nature will try to balance this out by moving water through the barries to dilute the salty water.
Differentiate osmosis from diffusion?
Diffusion is the net movement of molecules from a region of high concentration to a region of lower concentration. Osmosis is the net movement of water through a partially permeable membrane, from a solution of less negative water potential, to a solution of more negative water potential. Both Diffusion and osmosis occur down the concentration gradient. Basically they are the same thing, but osmosis is the diffusion of water in solution, rather then gaseous diffusion. We use the term osmosis to differentiate between gaseous transport and water movement. hope it helps..
