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The plasma membrane is made out of a phospholipid bilayer, which has a polar part and a non polar part. This is because the non polar part prevents polar molecules from getting into and leaving the cell, and the polar parts face the insides and the outside of the cell to be with the polar substances outside.

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phospholipid bilayer is a membrane that had 2 layers 

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phospholipid bilayer is a membrane that had 2 layers 

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The plasma membrane is made up of a bilayer. A bilayer is 2 layers of phospholipids. The 2 layers of phospholipids face each other the polar heads face the outside and the non polar tails face each other in the middle.

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What molecules are usually present in the transport process of a cell?

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That cell transport can go from an area of high concentration to low concentration. Or low concentration to high concentration 

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That cell transport can go from an area of high concentration to low concentration. Or low concentration to high concentration 

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I have learned that cells can go in and or out of the cell through the membrane, protein channels, and vesicles.

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active transport uses energy and passive transport does not require energy to let cells move in and out of membrane  

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active transport uses energy and passive transport does not require energy to let cells move in and out of membrane  

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I learned that the phospholipids have a bylayer and that the tail is nonpolar and the head is polar so the tails face each other

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I learned that the phospholipids have a bylayer and that the tail is nonpolar and the head is polar so the tails face each other

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i learned that the phospholipid has two layers and the tails are non-polar and the heads are polar

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i learned that the phospholipid has two layers and the tails are non-polar and the heads are polar

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The plasma membrane has two layers of lipids. The heads are polar and they attracts water and the tails are non-polar and they attract each other. 

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The plasma membrane has two layers of lipids. The heads are polar and they attracts water and the tails are non-polar and they attract each other. 

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why do the water molecules go through the membrane but also through the aquaporin protein channel?

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The phospholipid bilayer has two layers of Phospholipids. The phospholipids have a head that is polar and hydrophilic but the tail is hydrophobic and non-polar. So the heads kinda shield the tails.

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The membrane has Bilayey which has a part the is polar and non polar. the 2 layers face each other.

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The plasma membrane is made out of two layers of phospholipids. The heads of the phosphlipids face out and the tails face the inside. The heads are polar and the tails are non-polar.

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The plasma membrane is made out of two layers of phospholipids. The heads of the phosphlipids face out and the tails face the inside. The heads are polar and the tails are non-polar.

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The plasma membrane is a phospholipid bilayer

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The plasma membrane is a phospholipid bilayer

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A phospholipid is a lipid that has a polar head with a glycerol and a phosphate. The tail is still made of 3 fatty acids. The membrane is a bilayer because it is made of two phospholipids.

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how can you tell the difference of a solute and solvent  and endocytosis 

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how can you tell the difference of a solute and solvent  and endocytosis 

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There are many types of cell transport, which fall into two main categories. Passive and Active. Passive transport is split into simple and facilitated diffusion, both of which don't require energy/atp to occur. Active transport requires energy and is usually used when pulling a molecules against the concentration gradient.

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During osmosis, the molecules go from an area of high concentration to low concentration. 

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During osmosis, the molecules go from an area of high concentration to low concentration. 

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I learned that the cell membrane has two layers and cells can free flow through the membrane.

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The thing that is still unclear to me. I think that the objective is always to have equilibrium, for example during cell transport. The thing is, I don't know. It looks like when it moves from a high concentration to a low concentration. So would it not be equal?

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I am still confused how polar molecules are able to get through a non-polar protein channel

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I am still confused how polar molecules are able to get through a non-polar protein channel

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Osmosis is the process where water moves through the membrane. From and area of high water concentration to an area of low water concentration.

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How come the water molecules will still be able to go through the membrane and the aquaporins? Also what does it have to do with the heads of the Phospholipids?

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That lipid molecules made up of fatty acids and glycerol, form a phospholipid bilayer by bonding together, with the glycerol facing outside the cell, and inside the cell, and the fatty acids join together from both lipids. 

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That lipid molecules made up of fatty acids and glycerol, form a phospholipid bilayer by bonding together, with the glycerol facing outside the cell, and inside the cell, and the fatty acids join together from both lipids. 

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how is energy used during transportation

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how is energy used during transportation

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During passive cell transport its goes from an area of  high concentration to an area of low concentration, and moves with the concentration gradient.

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During passive cell transport its goes from an area of  high concentration to an area of low concentration, and moves with the concentration gradient.

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I am still wondering how enzymes get through. I understand the basic concept but it is still confusing

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I am still wondering how enzymes get through. I understand the basic concept but it is still confusing

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how is atp used in transport

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Passive transport doesn't use energy and goes from an area of high concentration to low concentration. Active transport uses energy and goes from an area of low concentration of high concentration.

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What is the difference between a solute and a solvent? And, how does atp factor into cell transport? 

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What is the difference between a solute and a solvent? And, how does atp factor into cell transport? 

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I am coufused about what protein channels some molecules go through and how others go straight through the membrane.

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I am coufused about what protein channels some molecules go through and how others go straight through the membrane.

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I learned that different molecules travel through in different ways.(Protein chanels through th membrane)

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I learned that different molecules travel through in different ways.(Protein chanels through th membrane)

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I learned that the phospholipid bilayer has 2 parts. The parts are polar and nonpolar, the head are nonpolar and the tails are polar.

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How is water able to go through the bilayer if it is polar?

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Active Transport involve atp and Protein channels, while Passive transport is, Passive, or well calm and does not need any energy.

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Do the large polar molecules ever touch the tails of the lipids or just the protein channels?

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Do the large polar molecules ever touch the tails of the lipids or just the protein channels?

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The cell membrane has a phospholipid bilayer.
The head of the lipid is polar and hydrophilic, and therefore it's facing the outside. The head is non-polar is hydrophobic.

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the types of passive transport

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There is two types, active and passive, active requires energy in the form of atp, but passive uses the concentration gradient/some protein channels to slip in and out of a cell to achieve equilibrium. 

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There is two types, active and passive, active requires energy in the form of atp, but passive uses the concentration gradient/some protein channels to slip in and out of a cell to achieve equilibrium. 