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In membrane structure: lateral diffusion and not transverse diffusion

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10y ago

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Can everything move in or out of the cell?

No, the cell membrane, which is a phospholipid bilayer of embedded proteins, regulates what enters and leaves the cell.


What particles move through cell membrane between phospholipid molecules What transport?

Osmosis, Passive Transport, and Active Transport


Does osmosis move phospholipid bilayer or protein channel?

Osmosis moves water molecules across the phospholipid bilayer of a cell membrane. Protein channels help facilitate the movement of water and other molecules by providing a pathway through the membrane.


Is cholesterol a phospholipid?

No it is in fact not a phospholipid just a lipid. A phospholipid needs a phosphate group and cholesterols molecular formula is C-27 H-46 O and with no Phosphate it can not be a phospholipid.


What molecule could move through a phospholipid membrane with the least difficulty?

A small, non-polar molecule like oxygen or carbon dioxide would move through a phospholipid membrane with the least difficulty, as they can easily pass through the hydrophobic interior of the membrane without the need for a specific transport protein.


Does plasma membrane have phospholipid layer?

A phospholipid bi-layer.


If you label with 14C radioactive a phospholipid part of plasma membrane and follow this lipid over a period of time what would you see this phospholipid doing?

You would observe the radioactive phospholipid moving within the plasma membrane as the cell grows and divides. This movement is due to the dynamic nature of the lipid bilayer, where phospholipids can laterally diffuse and move within the membrane. Over time, you may also witness the turnover of the labeled phospholipid as it gets degraded and replaced with newly synthesized phospholipids.


What general type of molecules is a phospholipid?

The head and tail is a phospholipid molecule


Because the phospholipid molecules and some proteins are free to move the plasma membrane is said to be?

Because the phospholipid molecules and some proteins are free to move, the plasma membrane is said to be fluid, allowing for flexibility and dynamic changes in its structure. This fluidity is essential for various cellular processes such as cell communication and transport of molecules across the membrane.


What process transports particles that move through cell membrane between phospholipid molecules?

The process that transports particles through the cell membrane between phospholipid molecules is called passive diffusion. In passive diffusion, particles move from an area of higher concentration to an area of lower concentration without the need for energy input.


He fatty acids in the tail of a phospholipid molecule are?

This is called the hydrophobic 'side' of the phospholipid molecule


Is testosterone a phospholipid?

No... It is a lipid because it is a hormone and hormones are lipids, but it is not a phospholipid.