False
Not always, some proteins are used in a variety. <span>Protein channels are needed to transport substances because it accelerates the transport process. Very few substances enter or leave cells without being attached to a transport protein. Different types of substances require different types of proteins to transport them. Protein channels transport water or ions downwards and ATP-powered pumps transport molecules or ions upwards. ATP generates energy to transport the molecules upwards. </span>
The 4 properties given are physical properties, therefore the ones I'll list are also physical properties of sodium chloride.
These properties may include:
It is white in color
It is hard
It is brittle
It conducts electricity in molten or aqueous state
