The molecule will enter the cell using a channel protein.
Answer:
To measure motion, you must be able to compare it to a reference point, or a non moving point.
Rather, each myelin sheath insulates the axon over a single long section and, in general, each axon comprises multiple long myelinated sections separated from each other by short myelin sheath-gaps called nodes of Ranvier. ... In the CNS, axons carry electrical signals from one nerve cell body to another.
Answer:
its a alteration i would go with B
Explanation:
No they cant be mechanical because then something would have to generate their rays through the inventing of a machine.
