Answer:
I, II, III
Explanation:
A threshold stimulus is a stimulus that is capable to produce a response in excitable tissues such as neurons and muscle fibers. At threshold potential, the outward movement of K+ and inward movement of Na+ become equal to each other. When the potential exceeds the threshold potential, more and more Na+ enter the cell to depolarize it and to allow the opening of Na+ channels. Therefore, to fire an action potential, the threshold must be exceeded.
Conduction of action potential is all or none phenomenon which means that either it occurs or it does not occur. As an impulse is passed by each successive part of an exon, it enters the refractory period during which there is no conduction of nerve impulse. It ensures the one-way conduction of impulse from the cell body to the axon terminal only.
Answer:
9 brains
Explanation:
No explanation, but you can fact check this by looking it up :)
I can tell U something to help U with ur paragraph, like no ur mass won't change, and ur weight will change because Weight = mass X gravity, and the gravity on the moon is less than that's on earth so ur weight will also decrease, hope that helped
Answer: Amino acids combine to make proteins.
Explanation:
