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Can water slouble molecules enter cells through the phospholipid bilayer?
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Why water molecules cannot diffuse directly through the phosolipids bilayer?
Hydrophobic centre of the phospholipid bilayer prevents non-liquid soluble molecules from passing through.
What is the primary role of phospholipids?
The phospholipid bilayer is the outer layer of the cell. It only lets very small molecules through it. The bigger ones will have to go through the proteins lodged in the bilayer and the HUGE molecules will have to perform exocytosis or endocytosis
What substance can pass through the lipid bilayer i.e. in between the phospholipid molecules?
Lipid solublewater insolublenon-polarnon-ionized
Can CO2 pass through the phospholipid bilayer?
oxygen
What can pass through the bilayer with ease?
Molecules that are not polar or ion molecules. That is because they won't be stopped by the hydrophobic tails and they will have the acknowledgement to pass through the cell membrane thanks to little resistance. This makes those molecules have an advantage.
What does Phospholipid Bilayer?
The phospholipid bilayer is the outer layer of the cell. It only lets very small molecules through it. The bigger ones will have to go through the proteins lodged in the bilayer and the HUGE molecules will have to perform exocytosis or endocytosis
Why water molecules cannot diffuse directly through the phosolipids bilayer?
Hydrophobic centre of the phospholipid bilayer prevents non-liquid soluble molecules from passing through.
What types of materials can enter the cell?
small molecules through the integral proteins in the phospholipid bilayer
What is the primary role of phospholipids?
The phospholipid bilayer is the outer layer of the cell. It only lets very small molecules through it. The bigger ones will have to go through the proteins lodged in the bilayer and the HUGE molecules will have to perform exocytosis or endocytosis
What substance can pass through the lipid bilayer i.e. in between the phospholipid molecules?
Lipid solublewater insolublenon-polarnon-ionized
Can CO2 pass through the phospholipid bilayer?
oxygen
What can pass through the bilayer with ease?
Molecules that are not polar or ion molecules. That is because they won't be stopped by the hydrophobic tails and they will have the acknowledgement to pass through the cell membrane thanks to little resistance. This makes those molecules have an advantage.
What are molecules on the cell membrane responsible for?
Letting different molecules in and out of a cell. Chemicals including steroid hormones, reactants and products of respiration...ect. the chemicals have to pass through the phospholipid bilayer (which is made from phosphates and fatty acid chains) molecules pass through the bilayer through passive diffusion, facilitated diffusion and active transport.
What is meant by cell membrane is semipermeable?
It allows only certain molecules to pass through.
How is membrane structure related to the transport of materials?
Membrane is thin and Êsemi permeable to allow Êmaterials to enter and exit easily. In addition, it Êconsist Êof protein Êand phospholipid bilayer, Êprotein layer release ÊproteinÊÊmolecules which act as carriers across the membrane.Ê Whereas, phospholipid bilayer Êallow small molecules such as water molecules to pass through quicker.
What is definition of selectively permeable?
The selectively permeable phospholipid bilayer (a.k.a plasma membrane) is 'selectively permeable' because it selects which molecules it allows to permeate (pass through).
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.
