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The plasma membrane is a dynamic structure. It is composed of 2 layers of lipid material with protein molecules interspersed through out. The phospholipids move at a rate of 2um. /sec. while the proteins move at a much slower rate. The phospholipids have 2 definite ends, a hydrophilic (focusing to the outside and inside of the membrane) and a hydrophobic one (forming the center of the membrane

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Which end of the plasma membrane is hydrophilic?

The "head" of the membrane, the phosphate.


The polar end of the phospholipid plasma membrane is . hydrophilic hydrophobic?

"philic" ( likes water)


Is the polar end of the phospholipid plasma membrane hydrophobic or hydrophilic?

The polar end of a phospholipid in the plasma membrane is hydrophilic, meaning it is attracted to water. This hydrophilic end faces outward towards the aqueous environment both inside and outside the cell.


What is the difference between diffusion of hydrophobic substances in comparison to hydrophilic ones across the plasma membrane?

the hydrophilic easier than hydrophobic substances


What are the molecules in the plasma membrane made of?

phospholipids are the molecules that make up the plasma membrane and they are made of polar (hydrophilic) heads and 2 non-polar (hydrophobic) tails


What is the structure of a plasma membrane and what is the role of their hydrophilic heads?

That is the structure of plasma membrane adjectent or near the secondary cell wall in a cells. It's a living outermost boundary of all the cells.


What indicates how easy it is for a substance to cross the plasma membrane?

Whether it's charged or not, hydrophilic, hydrophobic and its size.


What part of the cell membrane attracts water molecules?

The hydrophilic heads of phospholipids in the cell membrane attract water molecules. These heads have a charge that interacts with the polar water molecules, allowing them to form hydrogen bonds with the water. This hydrophilic property helps create a stable structure for the cell membrane.


Three major parts of the cell membrane?

The three major parts of the cell membrane are phospholipid bilayer, proteins, and cholesterol. The phospholipid bilayer forms the basic structure of the membrane, while proteins play various roles such as transport, signaling, and cell recognition. Cholesterol helps to maintain the stability and fluidity of the membrane.


How are the structures of the phospholipid bilayer and the plasma membrane related?

The phospholipid bilayer is the primary structural component of the plasma membrane. It consists of two layers of phospholipids arranged with their hydrophilic heads facing outward towards the aqueous environment and their hydrophobic tails facing inward, creating a barrier that separates the interior of the cell from the extracellular environment. Therefore, the phospholipid bilayer forms the basis of the plasma membrane's structure and function.


What parts of the plasma membrane are water soluble?

The plasma membrane is made of phospholipids. Phospholipids contain a hydrophillic head group which is considered water soluable. They also contain a hydrophobic tail group whichi s considered lipid soluable


What is in the center of the plasma membrane?

The lipid tails are found in the centre of the membrane. The membrane is made out of phospholipids. These have a phosphate head which is hydrophilic and a lipid tail that is hydrophobic. This form a bilayer (double-layer).