Question

A chemical substance in call membrane that stops the cell contents leaking out .
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Answer 1

Answer:

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Explanation:

Cell membranes are phospholipid bilayers that are usually visualised by the 'fluid mosaic model' consisting of proteins, carbohydrate polymers and glycoproteins that are able to move around relatively freely amongst the phospholipids. These molecules have many functions, including acting as channels to allow movement of molecules into and out of the cell, as cell signalling apparatus or even enzymes involved in metabolism. The phospholipids have polar heads which are hydrophilic, and nonpolar tails which are hydrophobic. The hydrophobic tails mean that it is difficult for polar molecules (which includes many substances that easily dissolve in water) to pass through the membrane without the help of channels or other cell membrane machinery. There are factors that affect the fluidity of the cell membrane, and these can affect membrane permeability making it easier for us to influence what substances can go into or out of cells

Answer 2

The liquid content of the cell leaks out due to exosmosis.

Most animal cells consist of only a phospholipid bilayer (plasma membrane)