The type of protein that plays an important role in transmitting signals in the nervous system is : A. Ion channel membrane proteins
The opening and closing of ion channel membrane proteins leads to changes in membrane potential which conducts information over an axon or synapses
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Answer:
B
Explanation:
Because most animals lives in the same area but we can classify them with the kind of OS cell they're made of because human and dogs can live in the same place but the os cell is what classify them like can you compare a dog with a human know only the human being is behaving senseless so my answer is B
Answer:
d. No longer dividing cells of the mammalian brain
Explanation:
Cell cycle consists of events that lead to the duplication of DNA and division of cell into two daughter cells. It occurs in the zygote to make more cells for building an organism. It also occurs in skin, blood and other internal organs for self renewal.
It consists of G1, S, G2 and M phase. DNA replication occurs in S phase of cell which means that it is in the process of dividing. No longer dividing cells of mammalian brain have exited the cell cycle and are in resting phase which is also called as G0. They cant form new cells hence wont have DNA replication. Thus, these cells would be least likely to contain cells in S phase.
