They are called electrical conductors
Insulators
Metallic conductors such as copper, aluminum, silver and gold are some examples of materials through which heat and electricity can easily flow.
Although the cell wall is tough, many materials, including water and oxygen, can pass through easily.
metals have the ability to pass and conduct electricity and heat through them....
Electric current flows in conducting materials such as metals. The best conductor of electric current is silver, followed closely by copper and then aluminium.
Conductors.
They are described as thermally conductive.
They are described as thermally conductive.
What you are considering when you are referring to how easily materials can pass through a membrane is how permeable the cell wall or membrane is.
it can easily pass through a wire a conductor or a battery
A material that passes current easily is called a conductor. The best conductors are metals.
First of all, because that's the definition of an insulator - a substance that doesn't easily let current pass. As to the mechanism, that has to do with how freely the charge carriers (usually electrons) can move.
Insulators
copper
"insulators"
an instalor
A Conductor