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.
Eligibility Requirements: To apply for the position of firefighter, you must: 1  Be at least 18 years of age. 2  Have a high school diploma or GED. 3  Have a valid driver's license and a good driving record.4  Have no felony convictions or misdemeanors involving moral turpitude.ligibility Requirements: To apply for the position of firefighter, you must: 1  Be at least 18 years of age. 2  Have a high school diploma or GED. 3  Have a valid driver's license and a good driving record. 4  Have no felony convictions or misdemeanors involving moral turpitude.