Proteins are kept within the lipid bilayer of a cell by a number of different means depending on their type. Integral proteins extend through the lipid bilayer to make contact with the interior of the cell, where their h... More »

Lipids are a diverse group of biological compounds, but they share the general property of being at least partially not water soluble and are composed of a series of hydrocarbon chains, ending with groups of bonded hydro... More »

The five functions of lipids are: acting as an energy source, providing insulation and protection to organs, giving structure to cell membranes, insulation and generating heat when temperatures change. Most people have e... More »

The phospholipid bilayer's function is to maintain a barrier between the cell and its external environment and to store and transport a variety of proteins that are essential to the cell's function. It controls what ente... More »

According to science writer Clare Smith for SeattlePi, the cell membrane is kept from collapsing by its phospholipid bilayer, maintenance of the correct temperature, a cytoskeleton and cell junctions. These are necessary... More »

In a cell, proteins are made in the cell's ribosomes. Ribosomes string together long chains of amino acids to synthesize proteins. The mRNA (messenger ribonucleic acid), tRNA (transfer ribonucleic acid) and the amino aci... More »

Enzymes are a type of protein, and like other proteins, they are made by the translation of the genetic code into a particular sequence of amino acids by ribosomes. After the enzyme is created as a chain of amino acids, ... More » Science Biology