The correct answer here is "cell membrane". Generally it makes sure that nothing enters or leaves the cell, except by its highly guarded "gates", such as ion channels, that let some particles through - but they're very picky about whom to let in!
Answer:
(1)
Explanation:
there are different divisions of the spinal cord but as a whole there are 31 segments
The correct answer is d. Please give me brainlest I hope this helps let me know if it’s correct or not thanks I appreciate it
Using energy is the answer to this question :)