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Why cant Water soluble ions and molecules cannot enter certain regions of a cell membrane because why?
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The reason that water soluble molecules cannot enter certain regions of the plasma membrane is due to the presence of?
gated channels which close when ions are present
How specific membrane molecules take part in process of growth and differentiation of tissues?
the growth of the plant in certain regions happens only because of the dividing tissue also known as the meristematic tissue , the processof maristematic tissue of taking up a permanent shape, size, and function is called as the differentiation.It is the process to form a permanent tissue ,and this process include uncountable membrane molecules, because of this complex process.
Why do marine organisms living in polar regions have a very high proportion of cholesterol in their membrane?
Marine organisms living in polar regions have a very high proportion of cholesterol in membranes to keep the membranes more fluid and keep the molecules moving faster because in cold temperature, molecules move slower.
Facilitated diffusion moves large molecules through what?
Glucose and polypeptides.
What is the physical difference in the number of molecules between two regions of space A.concentration gradient B.plasma membrane C. receptor proteins D. phospholipid layer?
Concentration gradient.
The reason that water soluble molecules cannot enter certain regions of the plasma membrane is due to the presence of?
gated channels which close when ions are present
How specific membrane molecules take part in process of growth and differentiation of tissues?
the growth of the plant in certain regions happens only because of the dividing tissue also known as the meristematic tissue , the processof maristematic tissue of taking up a permanent shape, size, and function is called as the differentiation.It is the process to form a permanent tissue ,and this process include uncountable membrane molecules, because of this complex process.
The process of “diffusion” through a membrane may be described by which of the following ?
: the movement of ions and molecules away from regions where they are in high concentration towards regions where they are in lower concentration.
Why does marine organism living in polar regions have high proportion of cholesterol in their membrane?
Marine organisms living in polar regions have a very high proportion of cholesterol in membranes to keep the membranes more fluid and keep the molecules moving faster because in cold temperature, molecules move slower.
Why do marine organisms living in polar regions have a very high proportion of cholesterol in their membrane?
Marine organisms living in polar regions have a very high proportion of cholesterol in membranes to keep the membranes more fluid and keep the molecules moving faster because in cold temperature, molecules move slower.
Why are lipid bylayers called plasma membranes?
a phosolipid bilayer makes up the plasma membrane. The bilayer forms because the hydrophobic regions (water hating) cling together and face inwards while the hydrophillic regions (water loving) attract each other and face the outside, water touching area. Lipids are amphiphillic, meaning they have both water loving, and water hating regions within its structure, allowing them to conform into a bilayer structure
Facilitated diffusion moves large molecules through what?
Glucose and polypeptides.
What is the physical difference in the number of molecules between two regions of space A.concentration gradient B.plasma membrane C. receptor proteins D. phospholipid layer?
Concentration gradient.
Explain the function of the cell membrane?
The plasma membrane separates the cell from its' surrounding environment and is arranged in a bilayer sheet of phospholipids. It is a mosaic of molecules in a fluid. That is, the molecules are able to float around slowly (like islands in the sea). The cholesterol molecules are scattered among the phospholipids to allow the membrane to function properly at body temperature. Most of the bilayer is hydrophobic; therefore water or water-soluble molecules do not pass through easily. 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.
How do nonpolar regions of a membrane proteins cause proteins to be held in the membrane?
IB sucks
The hydrophilic regions of a membrane protein are most likely to be found?
The hydrophilic regions of a transmembrane protein are likely to be found on the exterior of the membrane. The transmembrane protein may have three parts: a hydrophilic segment, a hydrophobic segment, and another hydrophilic segment. The hydrophobic region would be in between the hydrophilic regions. The hydrophobic region will be embedded in the membrane and the hydrophilic regions will be on the inside and outside of the membrane.
What is the importance of region?
regions are important because it lets you know on the map where are certain places
