Voltage-gated ion channels are responsible for generation of electrical signals in cell membranes. Their principal subunits are members of a gene family and can function as voltage-gated ion channels by themselves. They are expressed in association with one or more auxiliary subunits which increase functional
3. Pass the medical exam. To be a firefighter, you will need to have coordination, agility, and strength, as well as an overall high level of physical fitness. You must also be in general good health and be free of any physical constraints.
Generally speaking fire jobs require a unique set of pre-requisites and skills to be successful. 1  The candidate (you) must have a clean record free of chronic drug use, traffic issues, or felonies. 2  Usually an individual must be at least 18 years old; in some states you must be 21 to apply. The minimum requirements will also include that a candidate have a high school diploma or GED. A valid driverâs license is also a basic requirement.