0
What else can I help you with?
What is phospholipid bilayer of the cell membrane least permeable to?
The phospholipid bilayer of the cell membrane is least permeable to charged molecules such as ions and large molecules like proteins. These molecules have difficulty crossing the hydrophobic interior of the lipid bilayer.
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
Why must transport proteins be peripheral proteins?
Transport proteins must be peripheral proteins because they need to be able to move within the cell membrane to facilitate the transport of molecules across the membrane. Peripheral proteins are not embedded within the lipid bilayer of the membrane, allowing them to move more freely and interact with molecules on both sides of the membrane. This mobility is essential for transport proteins to effectively transport molecules across the cell membrane.
How easy or hard is it for polar molecules to pass through the cell membrane?
Polar molecules are effectively charged molecules. It's hard for them to cross the cell membrane because the membrane is comprised of an uncharged phospholipid bilayer. Charged molecules tend to have specific protein channels that allow them to cross the membrane.
What is meant by cell membrane is semipermeable?
It allows only certain molecules to pass through.
What is the plasma membrane aka phospholipid bilayer?
The plasma membrane, also known as the phospholipid bilayer, is a thin, semipermeable membrane that surrounds the cell. It consists of a double layer of phospholipid molecules with embedded proteins that control the movement of substances in and out of the cell. The plasma membrane is essential for maintaining the cell's structure and functions.
What is phospholipid bilayer of the cell membrane least permeable to?
The phospholipid bilayer of the cell membrane is least permeable to charged molecules such as ions and large molecules like proteins. These molecules have difficulty crossing the hydrophobic interior of the lipid bilayer.
Why is the cell membrane explained in terms of a fluid moasic model?
Because the membrane is a phospholipid bilayer with cholesterol that stabilizes the membrane. Proteins, receptors, pores, channels, carriers and self-markers embedded in the layer are like islands in a fatty ocean that move about.
What creates selective permebility of plasma membrane?
It is because of the make up of the membrane. Most of the bilayer is hydrophobic; therefore water or water-soluble molecules do not pass through easily. Other do pass through easily. A cell controls what moves through the membrane by means of membrane proteins embedded in the phospholipid bilayer.
What is meant by the statement The cell membrane is said to be fluid?
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.The proteins sort of float on the surface of the membrane like islands in the sea.
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.
What substance cannot pass directly through the phospholipids of the plasma membrane?
Large polar molecules and charged molecules cannot pass directly through the phospholipids of the plasma membrane because the phospholipid bilayer is impermeable to them. Instead, these molecules rely on specific transport proteins like channels or carriers to facilitate their movement across the membrane.
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
Why must transport proteins be peripheral proteins?
Transport proteins must be peripheral proteins because they need to be able to move within the cell membrane to facilitate the transport of molecules across the membrane. Peripheral proteins are not embedded within the lipid bilayer of the membrane, allowing them to move more freely and interact with molecules on both sides of the membrane. This mobility is essential for transport proteins to effectively transport molecules across the cell membrane.
How easy or hard is it for polar molecules to pass through the cell membrane?
Polar molecules are effectively charged molecules. It's hard for them to cross the cell membrane because the membrane is comprised of an uncharged phospholipid bilayer. Charged molecules tend to have specific protein channels that allow them to cross the membrane.
The permeability of a cell membrane depends on the ability of a molecule to diffuse across that membrane. Usually only molecules that are fat-soluble can permeate a cell membrane because?
Most of the bilayer is hydrophobic; therefore water or water-soluble molecules do not pass through easily. Usually only fat soluble are allowed through.A cell controls what moves through the membrane by means of membrane proteins embedded in the phospholipid bilayer Some membrane proteins have carbohydrates attached to them, forming glycoproteins that act as identification markers.
What The permeability of a cell membrane depends on the ability of a molecule to diffuse across that membrane. Usually only molecules that are fat-soluble can permeate a cell membrane because?
Most of the bilayer is hydrophobic; therefore water or water-soluble molecules do not pass through easily. Usually only fat soluble are allowed through.A cell controls what moves through the membrane by means of membrane proteins embedded in the phospholipid bilayer Some membrane proteins have carbohydrates attached to them, forming glycoproteins that act as identification markers.
