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What else can I help you with?
Explain why osmosis is different from diffusion?
Osmosis is specifically the movement of water from an area of high water concentration to an area of low water concentration across a small semipermeable membrane. Diffusion is the movement of other particles from an area of high concentration to an area of low concentration, either directly across the phospholipid bilayer or through protein channels imbedded in the phospholipid bilayer
How does faciliated diffusion work?
Facilitated diffusion is the process in which a membrane protein helps (facilitates) a substance pass through the bilayer. For example, water is too big a molecule to passively diffuse through the phospholipid bilayer and does not need to be actively imported. So the solution to this, is to put a transmembrane protein in the bilayer to form a channel big enough for the water molecule to pass through. I don't know how much you need to know, but just as a side note, the channel protein will be in its secondary structure, either as a beta sheet or alpha helix. I hope that helps.
How does H20 cross the membrane?
Aquaporin Water Channels. A special protein channel with a polar side lets water in but not other substance. The water must aline itself and slide through the narrow channel. Also known as osmosis. For more info look up "Aquaporin Water Channels" Nobel Prize in Chemistry Winners.
What is a protein channel made of?
An ion is an atom of any element, or a molecule of any compound, in which the number of positive charges (protons) and the number of negative charges (electrons) are not equal. Hence the ion is an atom or molecule with a net charge.
What is the name and function of the protein channel where hydrogen ions escape into the matrix of the mitochondrion?
The protein channel is called ATP synthase. It functions in the mitochondrion by allowing hydrogen ions to flow back into the matrix through the channel, which generates ATP in the process known as oxidative phosphorylation.
What is another name for the phospholipid bilayer?
It depends on which lipid bilayer you're talking about. There is the phospholipid bilayer that surrounds eukaryotic cells, cholesterol phospholipid bilayers, protein lipid bilayers, phase transition lipid bilayer, lipid bilayer membrane...
Is a protein that forms an ion channel through a membrane is most likely to be a peripheral protein a trans membrane protein a phospholipid an enzyme or an entirely outside the phospholipid?
A protein that forms an ion channel through a membrane is most likely to be a transmembrane protein. Transmembrane proteins span the lipid bilayer, allowing them to create channels for ions to pass through the membrane. Peripheral proteins are typically found on the surface of the membrane and do not form channels.
Embedded in the phospholipid bilayer?
Protein Molecules
The double layer of phospholipids is called a what?
The double layer of phospholipids is called the phospholipid bilayer. It forms the basis of every membrane, both the plasma membrane and all internal membranes.The idea that the bilayer has protein molecules embedded in it is the essence of the fluid mosaic model of the cell membrane.
Why do integral proteins stay in place in the phospholipid bilayer?
Integral proteins are able to stay in the phospholipid bilayer because of the way they fold. Proteins have both hydrophic and hydrophilic regions that correspond to the regions of the phospholipid bilayer.
Why cant water simply diffuse through the phospholipid bilayer?
Because there is a hydrophobic core in the phospholipid bilayer, it may be difficult for water molecules to pass through the membrane. Therefore, there are proteins that aid this process called aquaporins.
Explain why osmosis is different from diffusion?
Osmosis is specifically the movement of water from an area of high water concentration to an area of low water concentration across a small semipermeable membrane. Diffusion is the movement of other particles from an area of high concentration to an area of low concentration, either directly across the phospholipid bilayer or through protein channels imbedded in the phospholipid bilayer
In which layer of the epidermal cells is the waterproofed protein?
I'm not sure what your question is asking - if you mean what waterproofs cells in general, it's the phospholipid bilayer. In cells, the phospholipid bilayer has a hydrophobic (water hating) tail, pointed inwards, and a hydrophillic head (water loving) head on the outside.
What is faciliteted diffusion?
moecules passing accross the phospholipid bilayer, AGIANST the graient because the carrier protein is using ATP to do this e.g. glucose
The part of a membrane protein that extends through the phospholipid bilayer is primarily composed of amino acids that are?
hydrophobic in nature, such as alanine, valine, leucine, and isoleucine. These amino acids help stabilize the protein within the lipid bilayer by interacting with the hydrophobic fatty acyl chains.
What protein that spans the phospholipid bilayer one or more times?
Integral membrane proteins span the phospholipid bilayer one or more times. These proteins have transmembrane domains that anchor them within the lipid bilayer, allowing them to interact with both the extracellular and intracellular environments of the cell. Examples include transporters, receptors, and ion channels.
Is glucose permeable through phospholipid bilayer?
No, glucose is not permeable through the phospholipid bilayer on its own because it is a polar molecule. It requires a specific transport protein, such as a glucose transporter, to facilitate its passage across the membrane.
