Passive is when the channels don't need energy to do so and active is when they need energy
An amino acid is an organic molecule that is made up of a basic amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group (or side chain) that is unique to each amino acid.
A force is a push or a pull. When one object pushes or pulls another object, you say that the first object is exerting a force on the second object.
A chemical bond to form in a compound must be formed my two or more atoms attracted to each other.
Hope it helped!
