Answer:
they're both the same because they control the muscles
Receptor receives chemical signals came from the cell's outside environment. It is made up of protein molecule. The correct answer for the question above is letter a. Receptor protein allows one or <span>a few specific molecules to pass across the membrane.</span>
Answer:
i believe the answer is B, <em>She is observing a gnetophyte because, unlike other gymnosperms, gnetophytes can have needle-like leaves and deep root systems.</em>
Explanation: